What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
iTechGuides 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
The closest large-screen alternative to the Bigme B13 Pro is the BOOX Tab X C. It is the only option in this comparison explicitly specified with a 13.3-inch Kaleido 3 color E Ink display, 128GB of storage, Android 13 and an optional keyboard cover. If you can work on a 10.3-inch screen, the BOOX Tab Ultra C Pro is the stronger productivity choice because its official specifications highlight split-screen multitasking and note conversion. The Bigme B1051C Pro is the most natural same-brand alternative when you want a smaller device, while the BOOX Note Air4 C is aimed at straightforward reading and handwritten annotation.
These devices all involve the same basic compromise: color E Ink improves diagrams, comics, highlights and handwritten annotations, but the color layer is less detailed than black-and-white text. Choose by page size and writing workflow first, then verify the current regional bundle, price, warranty and accessory availability before ordering.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
BOOX Tablet Tab XC 13.3 Color ePaper 6G 128G | $819.99 | Buy on Amazon |
| 2 |
|
BOOX Tab X C Case Bundle | $827.43 | Buy on Amazon |
At a glance: which Bigme B13 Pro alternative fits you?
| Device | Display and color system | Reading and note-taking strengths | Best fit |
|---|---|---|---|
| BOOX Tab X C | 13.3-inch E Ink Kaleido 3; 128GB; Android 13 | Largest screen in this comparison; optional keyboard cover | PDFs, sheet music, comics and split-page work where physical page size matters most |
| BOOX Tab Ultra C Pro | 10.3-inch Kaleido 3; 300ppi black-and-white, 150ppi color; 4,096 colors | Split-screen multitasking and note conversion | Productivity-focused users who can accept a smaller canvas |
| BOOX Note Air4 C | Kaleido 3; 300ppi black-and-white, 150ppi color | General reading and handwritten annotation | Readers who want a less oversized color E Ink tablet |
| Bigme B1051C Pro | 10.3-inch anti-glare Kaleido 3 | Same-brand Android color E Ink experience | Bigme users who prefer familiar software and can accept a smaller screen |
The table separates the two decisions that are easiest to confuse. The Tab X C is the large-page choice; the Tab Ultra C Pro is the workflow choice. The Note Air4 C and B1051C Pro make more sense when portability and a conventional 10.3-inch tablet footprint outweigh the need to display a full-size document.
Why a 13.3-inch color E Ink screen changes the decision
Page size is the main advantage
A 13.3-inch display gives a PDF, comic page or sheet-music page more physical room than a 10.3-inch panel. That can reduce the need to zoom, pan or switch repeatedly between a page and a notebook. It is particularly useful for documents designed for A4, Letter or music-stand proportions, and for two-column papers where a smaller screen forces awkward reflow.
#1 Best Overall
- Does not support EMR stylus.
- Screen: 13.3" Kaleido 3 (4,096 colors) glass screen with flat cover-lens
- Resolution: B/W: 3200 x 2400 (300 ppi) Color: 1600 x 1200 (150 ppi)
- Touch: BOOX InkSpire stylus touch + capacitive touch
- OS: Android 13. CPU: 2.8Ghz Octa-core + BSR. RAM: 6GB ROM: 128GB
The benefit is workspace rather than simply diagonal measurement. A larger page can leave room for margins, handwritten comments or a second reference window. If your documents are mostly novels or single-column articles, the extra area may be less valuable than a smaller, easier-to-carry tablet.
The 10.3-inch class is easier to handle
A 10.3-inch device is still large enough for technical PDFs, textbooks and handwriting, but it takes less desk and bag space. The smaller canvas also makes one-handed repositioning and portrait reading more practical. In return, you are more likely to zoom on dense pages or use a split view with narrower panes.
Because the available specifications do not establish a universally comparable weight or battery-life figure for these models, do not assume that the larger screen has a particular carrying or endurance penalty. Check the current regional listing for those numbers if they determine your purchase.
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 problemsHow Kaleido 3 color E Ink affects text and annotations
Monochrome text is sharper than color content
For the Kaleido 3 devices listed here, the published figures are 300 pixels per inch in black-and-white mode and 150 pixels per inch in color mode. The color filter layer overlays the monochrome E Ink layer, so colored pages, highlights and illustrations have lower effective resolution than plain black text.
That distinction matters when you compare a color E Ink tablet with a monochrome reader. Body text, line art and handwriting can look crisp in black-and-white mode, while a shaded chart or full-color comic page appears softer and less saturated. Color E Ink is best understood as a way to add restrained color to a paper-like display, not as a replacement for a high-resolution LCD or OLED screen.
Color count is useful, but not the whole experience
The Tab Ultra C Pro specification lists 4,096 colors. That number describes the palette available to the display system; it does not guarantee the brightness or saturation of a conventional tablet. Front-light settings, ambient light and refresh behavior affect how easily you can distinguish colored highlights and fine graphics.
When comparing devices in person, inspect the same document in both modes. Look at small colored labels, pale gray text, thin music notation and handwriting over a highlighted area. A display that looks attractive on a colorful cover may still be difficult for detailed diagrams if the color layer reduces contrast.
Device-by-device alternatives
BOOX Tab X C: the large-page replacement
The Tab X C is the most direct alternative when the defining requirement is a very large color E Ink workspace. It is explicitly listed with a 13.3-inch E Ink Kaleido 3 display, 128GB of storage and Android 13. The optional keyboard cover adds a physical typing route for long notes, email or document editing without giving up the pen workflow.
Its strongest use cases are full-page PDFs, comics, sheet music, academic papers and documents that are uncomfortable to read in a 10.3-inch split view. It also gives a presenter, student or researcher more room to keep a reference page visible beside notes, although the exact multitasking implementation and supported accessories should be confirmed in the current software and regional listing.
The trade-off is that a 13.3-inch tablet is a commitment to a larger desk and bag footprint. The available product facts do not establish its weight, battery rating, front-light behavior, stylus latency or keyboard price. Treat those as purchase checks rather than assumptions. Confirm whether the keyboard cover and pen are included in the bundle offered in your country.
BOOX Tab Ultra C Pro: the productivity-oriented 10.3-inch choice
The Tab Ultra C Pro uses a 10.3-inch Kaleido 3 panel with 300ppi black-and-white resolution, 150ppi color resolution and a listed palette of 4,096 colors. Its official product information emphasizes split-screen multitasking and note conversion, making it the most workflow-focused option among the smaller devices in this comparison.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Split-screen use is valuable when you need a source document on one side and a notebook, translation, browser or outline on the other. Note conversion can turn handwriting into editable text, which is useful for meeting notes, research excerpts and outlines that eventually move into another app. The quality of conversion will depend on handwriting, language and page layout, so test a representative sample if this feature is central to your work.
The 10.3-inch canvas cannot show as much of a full-size page as the Tab X C. You may need to zoom, crop margins or accept narrower split panes. In exchange, the device is sized more like a conventional large e-reader and is likely to fit workflows where a 13.3-inch tablet feels excessive.
BOOX Note Air4 C: a balanced reading and annotation option
The Note Air4 C is another Kaleido 3 device specified at 300ppi in black-and-white mode and 150ppi in color mode. The available product information positions it around general reading and handwritten annotation rather than a particular large-screen or conversion feature.
Choose it when your routine is mainly reading articles, books and PDFs, then marking passages or adding handwritten notes. It is a better match than a 13.3-inch model if you regularly read away from a desk and do not need a full sheet-music page or two-page spread visible at once.
Recommended Free Tools
The available specifications do not state a screen diagonal, storage capacity, Android version, keyboard option, weight, front-light details or price for this comparison. Check the current listing for your region instead of transferring those details from another BOOX model.
Bigme B1051C Pro: the same-brand step down
The B1051C Pro is a 10.3-inch anti-glare Kaleido 3 device. It is the most direct alternative for someone who already prefers Bigme’s Android-based color E Ink environment but can accept a smaller screen than the B13 Pro.
An anti-glare surface can be helpful under office lighting or near a window, but it does not remove the underlying Kaleido 3 trade-off between monochrome and color resolution. Compare the pen feel, note application, export formats and synchronization behavior with the apps you already use. A familiar brand does not guarantee that files, templates or handwriting settings transfer exactly between models.
Independent coverage has described the B1051C Pro as a competitor to BOOX, but the available facts do not establish a standardized head-to-head battery, latency or display test. Use those descriptions as context, not as a substitute for checking the current specification and return policy.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Match the device to your reading and writing workflow
PDFs and academic papers
Start with the document’s original page dimensions. If you read full-page A4 or Letter PDFs, inspect them at 100 percent on each candidate. The Tab X C’s 13.3-inch panel is the strongest fit for viewing a page with minimal zooming. A 10.3-inch model remains workable when the PDF supports reflow, when you are comfortable cropping margins or when you mostly read one column at a time.
Rank #2
- Choose the large model for two-column papers, engineering drawings and pages with wide tables.
- Choose a 10.3-inch model when portability matters more than seeing the entire page.
- Check whether your annotation app writes directly to the PDF or stores marks in a separate layer before committing to a workflow.
Comics and illustrated books
Color E Ink can make covers, spot color and muted illustrations more useful than on a monochrome reader. The 150ppi color figure means fine textures and small colored lettering will not look as detailed as on an LCD. A larger screen reduces the need to zoom into panels, which is why the Tab X C is preferable for full-page comics.
Check the file format and app compatibility for your library. Android is explicitly listed for the Tab X C, while the available facts do not specify Android versions for every model in this comparison. Confirm that your preferred reading app can be installed, that page turns work acceptably with the device’s refresh settings and that your library’s digital-rights system is supported.
Sheet music
Sheet music benefits from physical page area and stable portrait orientation. A 13.3-inch display can keep a complete system of notation visible, reducing the need to turn pages or zoom during practice. A 10.3-inch device may require a tighter crop or more frequent page changes, especially for orchestral parts.
Before buying, test a sample score with thin staff lines, small dynamics and pedal markings. Confirm that the pen can annotate without obscuring notation and that the page-turn method is usable while playing. The available facts do not establish a foot-pedal accessory or a particular page-turn latency, so those are separate compatibility checks.
Handwritten notes and converted text
All four candidates are intended for pen-based notes, but the documented emphasis differs. The Tab Ultra C Pro specifically highlights note conversion; the Tab X C combines the largest canvas with an optional keyboard; the Note Air4 C focuses on handwritten annotation; and the B1051C Pro keeps the same-brand Android route in a smaller body.
Decide whether your notes are an archive or an input method. If you keep visual notebooks, pen feel, page templates and export quality matter most. If you need searchable meeting notes, conversion accuracy, language support and the ability to correct recognized text matter more than screen size.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Software, apps and synchronization checks
Android version and app compatibility
The Tab X C is listed with Android 13. The supplied product facts do not establish Android versions for the Tab Ultra C Pro, Note Air4 C or B1051C Pro, so verify the exact version on the listing for your region. Android compatibility does not automatically mean every app behaves like it does on a phone: E Ink refresh modes, animation-heavy interfaces and DRM restrictions can change the experience.
- List the reading, cloud-storage, note-taking and reference apps you use.
- Confirm that each app is available for the device’s Android version and can sign in in your country.
- Check export formats for annotated PDFs and notebooks, including whether handwriting remains editable or becomes a flattened image.
- Test synchronization with a non-critical document before moving an entire library.
Refresh controls and front-light behavior
Color E Ink devices generally offer several refresh strategies, but the available facts do not provide a single comparable mode list for these four products. Faster refresh can make scrolling and app interfaces feel more responsive while introducing more ghosting or reduced image quality; slower modes usually favor a cleaner static page.
Look for independent demonstrations of the exact firmware version you will receive, and check whether the front light has the color-temperature controls you need. Do not assume that a feature shown on one BOOX or Bigme model is present on another.
What to verify before you place an order
Prices, weights, warranty terms, regional shipping and accessory bundles are volatile and are not established by the product facts above. Use the following checklist on the seller’s current page:
- Screen: diagonal size, Kaleido generation, monochrome and color resolution, anti-glare treatment and front-light controls.
- Pen: whether a stylus is included, supported pressure or shortcut features, replacement nib availability and the cost of a spare.
- Keyboard: whether the cover is optional, included or sold by region, and whether its layout matches your language.
- Software: Android version, note-conversion languages, PDF export behavior, cloud services and update policy.
- Storage: built-in capacity and whether the stated capacity is enough for scanned books, comics and notebooks.
- Ownership: warranty region, return window, replacement parts, shipping taxes and the seller’s dead-pixel or return conditions.
Do not compare a bare tablet price with a bundle that includes a pen, keyboard or case. Record the complete cost of the configuration you will actually use.
Free tools Windows power users keep installed
One-click scans. No signup required.
A practical comparison procedure
If you can try the devices or buy from a seller with a clear return policy, use the same files and tasks on each model:
- Open a dense two-column PDF and read a full page without zooming.
- Open a color chart or comic page and inspect small labels, gradients and pale highlights.
- Write a paragraph at normal speed, then draw a box around text and erase a small correction.
- Annotate a PDF, close it, reopen it and confirm that the marks remain in the expected layer.
- On the Tab Ultra C Pro, test split-screen with the source document and notebook visible together.
- On the Tab X C, check whether the optional keyboard supports your intended typing position and shortcut workflow.
- Export the note or annotated document and open it on your computer to verify fidelity.
- Repeat the test under your usual room lighting and with the front light adjusted for evening use.
This process reveals problems that a specification sheet cannot: uncomfortable zoom levels, distracting ghosting, hard-to-read color, recognition errors or an export format that does not fit your existing archive.
Common buying mistakes
Choosing by color count alone
A stated palette such as 4,096 colors does not tell you how saturated or bright a page will appear. Resolution, lighting and the source image all affect readability. Evaluate the documents you actually read rather than judging a marketing image.
Assuming every model is equally productive
The Tab Ultra C Pro has documented split-screen and note-conversion features, while the Tab X C’s documented differentiators are its 13.3-inch display, Android 13, 128GB storage and optional keyboard. Do not infer identical multitasking or conversion support across the range.
Ignoring the bundle
A pen, keyboard cover, case and replacement nibs can change the effective price and the usefulness of the device. Confirm what is in the box for your country and whether accessories are proprietary or interchangeable.
Expecting LCD-style color and motion
Kaleido 3 is designed around paper-like E Ink viewing. Color pages are lower-resolution than monochrome text, and fast animation is not its primary strength. If your reading depends on video, vivid photography or rapid scrolling, a conventional tablet may be a better tool than any color E Ink alternative.
Bottom line: the right alternative depends on page area versus workflow
Pick the BOOX Tab X C when a 13.3-inch page is the reason you are replacing the Bigme B13 Pro: it is the largest researched color option and adds Android 13, 128GB storage and an optional keyboard route. Pick the BOOX Tab Ultra C Pro when split-screen work and note conversion matter more than maximum page size. Pick the BOOX Note Air4 C for a simpler reading-and-annotation brief, or the Bigme B1051C Pro when you want to stay with Bigme in a 10.3-inch anti-glare format.
Whichever route you take, treat the 300ppi monochrome/150ppi color distinction as central to the buying decision, and verify the current regional price, warranty, accessories, software version and return terms before checkout.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated 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 matchQuick 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.
