Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchPC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
An Eco-Drive watch that has stopped is usually depleted, not permanently broken. Put the dial in strong light, let it recharge for the time required by its movement, and follow the caliber-specific reset procedure if the manual calls for one. A two-second jump of the second hand is normally Citizen’s low-charge warning on models that support it. If the watch still will not run after a full prescribed charge and reset, look up the caliber manual and arrange service.
What a stopped Eco-Drive watch usually means
Eco-Drive converts natural or artificial light into electrical energy and stores surplus energy in an internal power reserve. Darkness does not stop a fully charged watch quickly: Citizen says many fully charged models can run for more than six months in total darkness. The exact reserve depends on the caliber and features, so that figure is not a guarantee for every Eco-Drive watch.
Prolonged storage in a drawer, a watch box, or a travel case can eventually exhaust the reserve. Once the stored energy is very low, the movement may stop or enter a power-saving state. A stopped watch therefore needs a sustained recharge rather than a quick burst of light.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →A watch that stopped after several weeks or months in darkness is not automatically defective. A fully depleted reserve can make the hands appear completely dead, while a partially depleted movement may keep running only briefly. Treat the first movement after exposure as evidence that some energy has arrived, not proof that the reserve is full.
#1 Best Overall
- Timeless styling that effortlessly takes you from work to play.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Sapphire Crystal, Blue Dial
- 100 Meters Water Resistant and 5 Year Limited Warranty
Identify the symptom before doing anything
| What you see | Most likely meaning | What to do |
|---|---|---|
| The hands are stopped after the watch spent weeks or months in darkness | The power reserve is depleted; on equipped models, power-saving behavior may also have halted the hands. | Expose the dial to bright light for a substantial period, then use the caliber instructions. |
| The second hand advances every two seconds | On models with this feature, Citizen identifies this as an insufficient-charge warning. | Recharge promptly. The warning alone does not prove that a component has failed. |
| The second hand moves after a short exposure but stops again later | There is enough energy for brief operation, but not enough reserve for normal running. | Continue charging for the full time specified for the movement; do not treat initial movement as a full charge. |
| The watch remains stopped after the manual’s full-charge procedure | A movement-specific reset may be required, or the watch may need professional diagnosis. | Find the caliber manual, perform only its stated reset, and escalate to Citizen or a qualified watch service provider if necessary. |
Not every Eco-Drive caliber uses the same warning, power-saving behavior, or reset sequence. Multifunction, chronograph, radio-controlled, and other complicated movements can have instructions that differ from a basic two- or three-hand watch.
How to recharge it safely
- Expose the dial, not just the caseback, to light. Place the watch so the dial receives the light directly. Daylight is an efficient source, but avoid locations where the case can become hot.
- Allow for a deep discharge. If the reserve was exhausted, a few minutes may only restart the hands temporarily. Continue charging for the full-charge period in the movement’s instructions.
- Keep the temperature under control. Do not leave the watch on a hot dashboard, on a radiator, or pressed against a high-intensity lamp. Citizen’s B620 manual, for example, warns against charging at about 60°C (140°F) or higher. The exact limit can vary by caliber.
- Check the display after charging. Confirm that the second hand advances normally rather than in two-second jumps. Check the time and any calendar or function indications against the caliber manual.
- Reset only when the instructions require it. Some movements need a post-charge reset after reaching a low- or no-charge state. Use the exact crown position and sequence for your caliber; do not apply a generic internet reset to an unknown movement.
Keep the crystal facing the light throughout the session. A bracelet, caseback, or sleeve covering the dial reduces the light reaching the photovoltaic cell. If you move the watch between several dim locations, the total energy gained may be far less than the elapsed clock time suggests. A stable, bright, cool location is more useful than occasional flashes of intense light.
Citizen’s approximate charging times
Citizen Watch US Support publishes the following estimates for basic analog Eco-Drive watches. They are approximate, depend on the watch and the light source, and should not override the manual for a particular caliber.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →| Charging environment | Approximate light level and setup | Charge for one day of use | Approximate time to full charge |
|---|---|---|---|
| Sunny outdoors | 100,000 lux | 2 minutes | 11 hours |
| Cloudy outdoors | 10,000 lux | 12 minutes | 40 hours |
| Fluorescent light | 30 W at 3,000 lux, with the watch 8 inches from the lamp | 40 minutes | 130 hours |
These figures describe energy added under stated lighting conditions, not a promise that every Eco-Drive model will recharge in exactly those times. A tinted crystal, a dial design, a complication, the angle of the watch, and the age or condition of the movement can change the result. A cloudy window indoors is also not equivalent to direct outdoor sunlight.
Choosing daylight
Outdoor daylight generally provides the fastest recharge in the published table. Set the watch where the dial receives light, check that the case is not heating excessively, and move it if it becomes hot. Bright light through a window can be useful, but the glass, distance, and angle reduce the light reaching the dial.
Using artificial light
Artificial light works when daylight is unavailable, but charging takes much longer at lower illuminance. Keep the watch at the distance specified by the movement or by the lamp setup you are using. Do not substitute a heat-producing lamp at close range for a brighter, cooler source.
Why the two-second hand jump matters
On Eco-Drive models equipped with this indication, a second hand that jumps two seconds at a time signals insufficient charge. It is a warning to recharge, not a diagnosis of a bad capacitor, solar cell, or other part. The movement can continue this warning until enough energy has been stored, and a severely depleted watch may need many hours before it returns to one-second operation.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsRank #2
- Iconic Promaster watches with advanced functions designed to venture to the deepest depths.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Luminous Hands and Markers and Mineral Crystal
- Sustainably powered by any light, with our Eco-Drive technology this watch never needs a battery. ISO Certified, 200M Water Resistant and 5 Year Limited Warranty
If the two-second jump continues after the full charging period, consult the caliber’s instructions. Citizen states that some watches require a reset after recharging from a low- or no-charge condition. Because the crown positions and sequence differ, the correct action depends on the movement.
Do not repeatedly pull the crown, press every button, or change calendar settings while the warning is active. Those actions do not add energy and can create a second problem on a multifunction movement. Charge first, then use the setting procedure written for the exact caliber.
Power-saving behavior and a watch that appears frozen
Some Eco-Drive movements stop or reduce hand movement during prolonged darkness to conserve their remaining reserve. The watch can appear dead even though the power-saving function is operating as designed. Place the dial in light and give it time to recover. If the hands do not restart after the period stated in the manual, continue with the caliber-specific troubleshooting steps rather than repeatedly pulling and pushing the crown at random.
Power saving is different from a mechanical jam or a confirmed electronic failure. The visible symptom alone cannot distinguish those conditions. A documented recharge test is the safe first step; service is the next step if the test and any required reset produce no result.
Find the caliber before attempting a reset
The caliber number is normally engraved on the caseback. It identifies the movement, which is more useful for troubleshooting than the retail model name alone. Write down the complete marking, including letters or suffixes, and use it to locate the matching Citizen manual and setting instructions.
Citizen’s general guidance distinguishes basic two- and three-hand movements from multifunction movements. The crown-out positions and timing used for one design cannot safely be assumed for another. A reset sequence copied from a different caliber can leave the watch mis-set or fail to clear the low-charge state.
What the manual should tell you
- The minimum charging conditions and estimated time after a complete discharge.
- Whether the movement has a two-second low-charge warning.
- Whether a low-charge or stop condition requires a reset.
- The exact crown position, button sequence, and waiting period for that reset.
- Any temperature limit or special instruction for charging.
B620 example: useful, but not a universal rule
Citizen’s B620 manual illustrates why caliber-specific instructions matter. For that movement, Citizen recommends direct sunlight for five to six hours at least once a month. It also cautions against charging at about 60°C (140°F) or higher. The B620 will stop if it remains uncharged for eight days or longer after its insufficient-charge warning begins.
Rank #3
- Men's luxury timepieces with technical advancements and a sporty style
- 3 Hand, Day / Date
- Silver-Tone Stainless Steel, Arabic Markers
- Luminous Hands and Markers, Mineral Crystal
- Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. 100 Meters Water Resistant and 5 Year Limited Warranty.
Those five-to-six-hour, 60°C, and eight-day figures apply to the B620 example. They should not be copied to another Eco-Drive caliber unless that caliber’s own manual gives the same limits.
A complete recovery procedure
1. Confirm that the watch is actually an Eco-Drive movement
Look for Eco-Drive markings and the caliber information on the caseback. If the watch uses another power system, the charging procedure here may not apply.
2. Record the current state
Note whether the hands are completely stopped, whether the second hand jumps every two seconds, and whether the watch was stored in darkness. Avoid changing calendar or chronograph settings while the movement is critically low on power.
3. Start a controlled recharge
Place the dial under bright, cool light. Outdoor daylight is efficient; an artificial source is acceptable when it does not overheat the case. Keep the watch exposed continuously rather than moving it between dark locations.
4. Continue through the estimated full-charge period
Use the caliber manual first. If you only have Citizen’s general table for a basic analog model, treat its figures as estimates: 11 hours in 100,000-lux sun, 40 hours in 10,000-lux cloudy outdoor light, or 130 hours under the stated 30 W fluorescent setup. A deeply discharged or complicated watch may require different timing.
5. Observe normal operation
After charging, the second hand should normally advance once per second on a model that uses the two-second warning. Verify that the hands keep moving when the watch is removed from the light. If it immediately returns to two-second jumps, it has not stored enough energy or the manual requires another step.
6. Perform the prescribed reset, if any
Follow the exact procedure for the caliber. Basic two- and three-hand watches can have different crown-out requirements, while multifunction movements require their own sequence. Do not infer a reset from the watch’s appearance or from a different model.
Rank #4
- Timeless styling that effortlessly takes you from work to play.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Mineral Crystal
- 30 Meters Water Resistant and 5 Year Limited Warranty
7. Escalate when the documented procedure fails
If a full prescribed charge and the correct reset do not restore operation, use Citizen’s service route or a qualified watch service provider. The available guidance does not identify a particular failed component, so replacing a part based only on the symptom is unjustified.
When charging is not the answer
- The watch overheats during charging: Move it to a cooler, bright location and follow the caliber’s temperature limit.
- The hands never move after the manual’s full-charge time: Confirm the caliber, repeat the instructions once carefully, and arrange service if there is still no response.
- The watch runs only briefly after many hours of light: That indicates inadequate stored energy or a condition that needs professional evaluation; do not assume the initial movement proves the watch is healthy.
- The low-charge warning remains after charging: Check whether that movement specifies a reset. Use no other caliber’s sequence.
- The crown or buttons behave unexpectedly: Stop experimenting and consult the movement manual, especially on multifunction watches.
Storage and routine charging habits
Keep the dial exposed to ordinary light during normal wear. If the watch will be stored for a long period, give it regular light rather than leaving it in a dark box until the reserve is exhausted. The interval is model-dependent; the B620 manual’s monthly five-to-six-hour sunlight recommendation is an example, not a universal schedule.
Free tools Windows power users keep installed
One-click scans. No signup required.
Eco-Drive is designed to avoid routine battery replacement, but that does not mean every stopped watch can be revived indefinitely with light. A watch that repeatedly loses its reserve despite correct charging should be evaluated by Citizen or a qualified service provider. Do not open the case or attempt a DIY cell replacement based only on a low-charge indication.
What not to do
- Do not leave the watch on a hot car dashboard or directly against a high-heat lamp.
- Do not assume a few minutes of movement means the reserve is full.
- Do not treat the two-second warning as proof of a failed component.
- Do not use a reset procedure copied from another caliber.
- Do not generalize B620 charging times or limits to every Eco-Drive model.
- Do not open the case to replace an energy-storage cell without qualified service guidance.
Preparing a service request
Before contacting Citizen or a watchmaker, record the caliber marking, the approximate time the watch spent in darkness, the light source and duration used for charging, and whether the second hand ever moved or displayed the two-second warning. This information helps the technician reproduce the symptom without guessing which movement is installed.
Keep the watch intact and avoid opening the case before service. A case opened without the correct tools or sealing procedure can create additional problems unrelated to the depleted reserve. The appropriate escalation is the manufacturer’s service route or a qualified provider familiar with solar movements.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where to get the correct instructions
Use the caliber number on the caseback to find the matching Citizen manual and setting instructions. Citizen’s Help Center and manuals service are the appropriate starting points for model-specific charging, reset, and operating details. If the documented procedure does not restore the watch, contact Citizen or a qualified watch service provider and provide the caliber number, the charging conditions you used, and the observed symptom.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Frequently Asked Questions
How long should I charge a stopped Eco-Drive watch?
Use the exact caliber manual whenever possible. For basic analog models, Citizen estimates about 11 hours in sunny outdoor light at 100,000 lux, 40 hours in cloudy outdoor light at 10,000 lux, or 130 hours under a 30 W fluorescent lamp at 3,000 lux and 8 inches. These are approximate, not universal promises.
Best Value
- Men's luxury timepieces with technical advancements and a sporty style
- 3 Hand, Date
- Stianless Steel Case with Black Rubber Buckle Strap
- Luminous Hands and Markers, Mineral Crystal
- Sustainably powered by any light, with our Eco-Drive technology this watch never needs a battery. 100 Meters Water Resistant and 5 Year Limited Warranty
What does a two-second jump of the second hand mean?
On models that provide this warning, it means the charge is insufficient. Recharge the watch promptly. It does not by itself prove that the solar cell, energy-storage cell, or another component has failed.
Can I charge an Eco-Drive under a lamp?
Yes, artificial light can recharge it, but lower illuminance takes much longer. Keep the dial facing the lamp, follow the specified distance, and prevent the case from heating. Never substitute a dangerously hot lamp for a suitable cool light source.
Why did my watch start and then stop again?
A short exposure may have supplied enough energy for temporary movement without rebuilding the reserve. Continue charging through the manual’s full-charge period. If it still stops quickly, use the caliber’s troubleshooting instructions and arrange service if needed.
Do all Citizen Eco-Drive watches use the same reset?
No. Basic two- and three-hand movements can differ, and multifunction movements have their own procedures. Find the complete caliber number on the caseback and follow only its manual.
How do I find the caliber number?
Look for the movement marking engraved on the caseback, including any letters or suffixes. That number identifies the instructions more reliably than the retail model name.
How often should I expose a stored Eco-Drive watch to light?
The schedule is caliber-dependent. Citizen’s B620 manual, for example, recommends five to six hours of direct sunlight at least once a month. Treat that as a B620 instruction, not a rule for every Eco-Drive.
When should I stop troubleshooting and seek service?
Seek Citizen or qualified watch service after the prescribed full charge and caliber-specific reset fail to restore operation, or when the watch repeatedly loses its reserve despite correct charging. Do not diagnose or replace an internal part from the symptom alone.
Recommended Free Tools
The Bottom Line
Most stopped Eco-Drive watches need sustained light, not an immediate part replacement. Charge the dial safely, allow for the movement’s full-charge time, and use only the reset procedure for its caliber. If normal operation does not return after those documented steps, have Citizen or a qualified watch service provider inspect it.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
