The BIGME B251 COLOR E INK MONITOR plays into the appeal of eye‑friendly, reflective displays. A 25.3‑inch screen that doesn‘t need a glowing backlight sounds like a dream for programmers, writers, and anyone who spends all day in front of a screen. However, at around 1,500 US dollars, this monitor fails to deliver on its core promise. The CNET review team gave the B251 a score of 5 out of 10, calling it a deeply compromised experience for a device with such a considerable price premium. This review covers the display quality, build, performance, and better alternatives.
Key Specifications Of The Bigme B251
The BIGME B251 is based on E Ink Kaleido 3 technology, which stacks a color filter layer over a standard black‑and‑white E Ink panel. The table below summarizes its core specifications based on product listings and technical reviews.
| Feature | Specification |
|---|---|
| Display Size | 25.3 inches |
| Panel Technology | E Ink Kaleido 3 (color filter layer) |
| Black‑and‑White Resolution | 3,200 x 1,800 pixels (approx. 300 PPI physically) |
| Color Resolution | 150 PPI (due to the color filter) |
| Refresh Rate | Up to 15 Hz (varies by mode; practically much slower in high‑clarity modes) |
| Response Time | Approximately 36 milliseconds |
| Brightness | Reflective (ambient); has a built‑in front light with adjustable color temperature |
| Ports | HDMI, Mini HDMI, DisplayPort, USB‑C, USB‑A (hub functionality) |
| Wireless | Supports wireless streaming to the monitor |
| Adjustability | Full ergonomic stand with tilt, pivot, height, and rotation |
| Speakers | Built‑in stereo speakers (poor quality) |
| Dimensions | Over 1 inch thick, white bezels are noticeably large |
| Weight | Not specified, but heavy due to the size |
| Price | Approximately 1,500 USD on Amazon, sometimes available as an AIO PC (All‑in‑One) with 12th‑gen Core i5, 16 GB RAM, and a 1 TB SSD for a higher price |
Display Quality: The Core Problem
The main selling point of E Ink is that it uses ambient light and has no blue light, which should be easier on the eyes than a traditional LCD monitor. In practice, the B251‘s color filter layer dims the display so much that you must use its built‑in lighting in most indoor settings, even near a sunny window. This defeats one of the primary benefits of E Ink technology.
Clarity and Sharpness
Bigme claims a 300 PPI E Ink resolution, but the color layer reduces effective color resolution to just 150 PPI. Text clarity suffers noticeably. Even black‑and‑white text shows noticeable pixelation, and white text on a black background is barely legible. When viewed side‑by‑side with a 15.3‑inch 1200p display, the B251 looks significantly less sharp.
Refresh Rate and Ghosting
The BIGME B251 offers multiple image modes: image, text, web, and video. Each mode trades off clarity against responsiveness.
- Image Mode: Offers the best clarity but runs at roughly 1 Hz (one frame per second). Moving the mouse is virtually impossible.
- Video Mode: Smoother, but the picture becomes blotchy and grainy. Ghosting artifacts persist permanently if a pixel isn‘t refreshed.
- Text and Web Modes: Provide a reasonable middle ground, but they rely heavily on dithering, which makes the screen look messy and grainy for lots of content.
The end result is that even basic tasks like finding your mouse cursor or parsing rough‑edged text become an extra strain on your eyes — the exact opposite of what an E Ink monitor should deliver.
Build Quality And Hardware
The BIGME B251 has a simple white‑and‑silver color scheme that harks back to old all‑in‑one Mac systems. The white bezels are undeniably large for 2026, but they are pleasantly curved and uniform. The stand offers plenty of position flexibility with tilt, pivot, height, and rotation adjustments.
However, the build quality does not match the price. The back case of the monitor and the large bezels feel like cheap plastic. The stand neck has a plastic plate painted silver to look like metal, and the monitor relies on an external power brick, which feels unnecessary for a 60‑watt device. The built‑in speakers have a noticeable resonance even at medium volumes, which is hard to accept at this price point.
Connectivity And Features
The BIGME B251 has a reasonable variety of ports: HDMI, Mini HDMI, DisplayPort, and USB‑C, plus USB hub capabilities. It also supports wireless streaming, though the CNET reviewer found it less compelling than Bigme‘s promotional content suggested. The monitor comes with a small remote for quickly adjusting settings, which is very useful because the monitor‘s physical controls feel cheap and have labels that are hard to read.
Bigme B251 Vs Onyx Boox Mira Pro 2 Vs Dasung Paperlike
The BIGME B251 is not the only large‑format E Ink monitor. The table below compares it with two established alternatives: the Onyx Boox Mira Pro and the Dasung Paperlike series. Note that newer 2026 models may have improved specifications.
| Aspect | Bigme B251 | Onyx Boox Mira Pro (25.3‑inch) | Dasung Paperlike 253 (25.3‑inch) |
|---|---|---|---|
| Technology | E Ink Kaleido 3 (color) | Monochrome E Ink | Monochrome E Ink (color version also available) |
| Resolution | 3,200 x 1,800 (B&W) / 150 PPI (color) | 3,200 x 1,800 (high‑contrast) | 3,200 x 1,800 |
| Refresh Rate | Up to 15 Hz (practically slower) | Proprietary Boox Super Refresh technology (faster, more stable) | Dasung proprietary high‑speed controller |
| Key Strength | Color capability | Extremely stable performance, high contrast | Very low latency, optimized for programming |
| Key Weakness | Dim display, poor text clarity, ghosting | No color | No color (color version is more expensive) |
| Price | ~1,500 USD | ~1,600 USD | ~1,500 USD (B&W) / ~1,800 (color) |
| Best For | People who absolutely need color E Ink | Programmers, writers, researchers | Programmers, coders, real‑time text entry |
The BOOX Mira Pro is widely regarded as a “professional solution” with high contrast and stable performance. The DASUNG Paperlike series is the best choice for coding because of its very low latency. If you can live without color, both alternatives deliver a far better experience for less money. The BIGME B251‘s Kaleido 3 color layer degrades brightness, clarity, and responsiveness so much that the added color is not worth it for most users.
Customer Feedback And Professional Reviews
The BIGME B251 has received mixed to negative feedback from users and critics.
CNET (5/10): “E Ink benefits diminished by color LCD layer … Low color pixel density … Unsatisfying speakers … Underwhelming design.”
Trustpilot (2.8 / 5 on average): Multiple User complaints include: “They do not allow returns of this monitor, PERIOD” and “Warning, Fraudulent company!!! Monitor B251 not usable, refund rejected.”
Reddit (0% positive / Hacker News): Users report that the mouse lag was a lot and the monitor was barely usable on initial firmware versions. However, some note that when the panel works, the device is “an absolute JOY to use” despite the slow refresh, low color saturation, and ghosting.
Geeklando analysis: “The readability is a critical point … the practical performance disappoints compared to other 15.3‑inch 1200p displays.”
The common theme is that while the concept is appealing, the execution is deeply flawed, and buyer beware of the company‘s restrictive return policy.
Pros And Cons Of The Bigme B251 Color E Ink Monitor
Pros
- Very easy to see in bright, sunlit environments thanks to its reflective nature.
- Wide range of input options, including HDMI, Mini HDMI, DisplayPort, and USB‑C.
- Fully adjustable stand with tilt, pivot, height, and rotation.
- Included remote control makes settings adjustments easier.
- Color E Ink capability is a technical novelty.
Cons
- The E Ink benefits of low eye strain are severely diminished by the color LCD layer, which reduces brightness and requires front lighting.
- Very low color pixel density (150 PPI) results in fuzzy, pixelated text.
- Extremely low refresh rate makes even basic mousing around difficult in clarity modes.
- Persistent ghosting artifacts ruin the user experience.
- Cheap plastic build feels unworthy of a 1,500 USD monitor.
- Unsatisfying speakers with case resonance at moderate volumes.
- Relying on an external power brick is unnecessary for a 60‑watt device.
- Customer service and return policy are reportedly very poor.
Frequently Asked Questions (FAQs)
Is the Bigme B251 monitor worth buying?
No, not at its current price and with its current performance. The core problems with brightness, text clarity, and refresh rate are too severe. For the same budget, you can buy a superior monochrome E Ink monitor from Onyx Boox or Dasung.
What is the real resolution of the Bigme B251 for color content?
The black‑and‑white resolution is 3,200 x 1,800, which is equivalent to about 300 PPI. However, the color resolution is effectively 150 PPI because of the color filter array, which is why text looks fuzzy in color modes.
Can you code on the Bigme B251?
In theory, yes. In practice, the experience is poor. The “text” and “web” modes have too much dithering, making code blocks look messy. The “image” mode is too slow. The “video” mode is too blotchy.
