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The Casio Pro Trek PRJB001EX-1 is available through Casio’s US online store, with a reversible strap that can store small items such as keys or cash. Notebookcheck reported the US price as $220 on October 8, 2026; check Casio’s listing for current price and stock.
What makes the PRJB001EX-1’s strap different?
Casio’s defining feature is a reversible band with small storage compartments. It is designed to keep small items such as keys or cash close at hand, and the band can be reversed to cover and protect the watch. Casio’s official product page shows the design and identifies this US model as the PRJB001EX-1.
Notebookcheck also reports that the watch can be attached to a carabiner and hung inside a tent or on a backpack. That describes a carrying option, not a stated load rating: the available product information does not establish that the band is a substitute for a dedicated gear pouch.
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US price and availability
Notebookcheck reported on October 8, 2026 that Casio’s US online store offered the PRJB001EX-1 for $220, with free shipping estimated at three to five business days. These are dated retail details, not guaranteed current terms; confirm the live listing before ordering. Casio’s product page confirms the model and strap, but the captured page did not state price or stock status.
#1 Best Overall
- Casio's Tough Solar Technology charges your watch by converting light to energy
- Part of Casio's green initiative - Featuring Eco-Friendly Biomass Construction and environmentally friendly / recyclable packaging, paperwork & user's manual
- 100M Water Resistance | Rotating Bezel | Super Illuminator w/ Full Auto LED/LCD Screen
- Bluetooth Ready | Pair with your smartphone, and easily record the date, time, or your position on a map within the Casio App
Reported watch features
The PRJ-B001 Series model combines two analog hands with a small digital display and an indicator dial. Notebookcheck lists these additional features and specifications; they are reported product details, not independently tested performance:
- Tough Solar charging and Bluetooth connectivity.
- Support for 38 time zones.
- Low-temperature resistance to -10°C (14°F).
- 100 m water resistance.
- A rotating bezel that Notebookcheck says helps protect the buttons from accidental presses.
- A double LED backlight, stopwatch, timer, and alarms.
Where the watch has launched
Notebookcheck says the model launched in Japan in August 2026 and was subsequently available in the US. Its October 8 report said the European release timing was unclear, so a US listing should not be taken as evidence of a European launch date. The Japan-market PRJ-B001EX-1JR is a different regional model designation; the US model covered here is PRJB001EX-1.
Quick Recap
Best Value
- Environmentally Friendly - Crafted with Bio-Based Resin Materials to reduce impact on the planet
- Triple Sensor Technology includes a Thermometer, Altimeter, and Compass, allowing you to take on the outdoors without worry
- Casio's Tough Solar technology allows you to re-charge your watch without ever needing to replace the battery, to take in for servicing
- 100M Water resistance provides safety during moderate water activities
Rank #4
- Triple Senser; Silicone Band; Tough Solar; Multi Band 6; 100M Water Resistant; Digital Compass w/Bearing Memory
- Altimeter; Barometer; Thermometer; World Time; Full Auto LED Light; 5 Daily Alarms; 1/100th Sec. Stopwatch; Countdown Timer; Full Auto Calendar; Power Saving Function
- Quartz Movement ; Measuring unit: 1 m (5ft) ; Manual memory measurements (up to 30 records, each including altitude, date, time)
- Case Diameter: 51.5mm
- Water resistant to 100m (330ft): in general, suitable for swimming and snorkeling, but not diving
Rank #3
- Tough Solar Power, 100M Water Resistant, Low Temperature Resistant (-10 C / 14 F), Altimeter, Digital Compass, Barometer, Thermometer. Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F)
- Full Auto LED (Super Illuminator) Backlight with Afterglow, World Time, 31 time zones (48 cities + UTC), city name display, daylight saving on/off, Sunrise/Sunset Data, 5 Daily Alarms (4 one-time and 1 snooze alarm)
- Hourly Time Signal, 1/10 Second Stopwatch, Countdown Timer, 12/24 Hour Formats, Button operation tone on/off
- Storage Battery: Solar Rechargeable Battery, Battery Level Indicator
- Power Saving Function, Approx. Battery Life: 9 months on full charge (without further exposure to light), Module 3415
Rank #2
- Case / Bezel Material: Resin / Stainless Steel
- Silicon Band / Mineral Glass / NeoBrite
- Screw Lock Crown / 100 M Water Resistance
- Case Diameter: 51.5mm
- Water resistant to 100m (330ft): in general, suitable for swimming and snorkeling, but not diving
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.
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