Onyx Boox Go Color 7 (Gen II) specifications and in-depth review

Onyx Boox Go Color 7 (Gen II)

Manufacturer: Onyx

The Onyx Boox Go Color 7 (Gen II) is a compact e-reader built around a 7-inch color e-paper display that combines self-lit technology with an anti-reflection coating, making it suited for reading in a range of lighting conditions. Running as an open-source, multi-user system, it supports a broad set of features including text-to-speech, a built-in dictionary, on-device machine learning, and compatibility with 26 file formats. At 190 g and just 6.4 mm thick, the device is relatively slim for its category.

Under the hood, the Go Color 7 (Gen II) is powered by an octa-core processor clocked at 8 x 2 GHz, paired with 4 GB of RAM and 64 GB of internal storage that can be expanded via an external memory slot. Wireless connectivity covers Wi-Fi 4 and Wi-Fi 5 alongside Bluetooth 5.1, while the 2300 mAh rechargeable battery charges over USB Type-C. The device lacks a 3.5 mm headphone jack but includes a built-in mono speaker, and additional software-side features include split-screen support, picture-in-picture, dark mode, and offline voice recognition.

Pros
  • The 7-inch e-paper display with a 300 ppi pixel density and anti-reflection coating delivers sharp, glare-reduced text for comfortable reading
  • Self-lit screen allows reading in low-light conditions without needing an external light source
  • With 64 GB of internal storage and an external memory slot, there is plenty of room for large libraries and expandable capacity
  • Bluetooth 5.1 and dual-band Wi-Fi (Wi-Fi 4 and Wi-Fi 5) cover a solid range of wireless connectivity needs
  • Support for 26 file formats alongside a built-in dictionary and text-to-speech makes it versatile for different reading workflows
  • The open-source system with multi-user support, on-device machine learning, and offline voice recognition offers a notably flexible software environment
Cons
  • At 2300 mAh without fast charging or wireless charging, replenishing the battery is slower and less convenient
  • The absence of a 3.5 mm headphone jack limits wired audio options despite the device supporting text-to-speech and having a built-in speaker
  • The single mono speaker means audio output lacks spatial depth for those who use audio features regularly
  • No weather sealing means the device is vulnerable to accidental splashes or moisture exposure
  • The display does not include branded damage-resistant glass, leaving the screen more susceptible to scratches or impact damage
Who is this for?

This device is well suited to avid readers who want a versatile, capable e-reader that goes beyond basic functionality. The 7-inch self-lit e-paper display with 300 ppi pixel density and anti-reflection coating makes it comfortable for long reading sessions in a variety of lighting conditions, while support for 26 file formats and a built-in dictionary caters to users who work with diverse content types. Those who value software flexibility will appreciate the open-source, multi-user system with on-device machine learning, offline voice recognition, and a broad set of privacy controls, making it a strong fit for technically inclined users who want more control over their device. The combination of 64 GB internal storage, an external memory slot, and dual-band Wi-Fi alongside Bluetooth 5.1 also makes it practical for users who manage large digital libraries or pair external audio devices.

Who is this NOT for?

Users who need an e-reader with rugged or water-resistant build quality will find this device lacking, as it offers no weather sealing and no branded damage-resistant glass, making it a poor choice for reading near water or in demanding outdoor environments. Those who rely heavily on wired audio accessories — such as headphones for extended text-to-speech listening — will be hindered by the absence of a 3.5 mm headphone jack. Additionally, users who require fast and convenient recharging will likely find the experience frustrating, since the device supports neither fast charging nor wireless charging, and the 2300 mAh battery capacity means more frequent charging stops without the convenience of modern charging options.

Design:

weight 190 g
volume 136.7808 cm³
width 137 mm
is weather-sealed (splashproof)
thickness 6.4 mm
height 156 mm

The device measures 156 mm in height and 137 mm in width, with a slim profile of just 6.4 mm in thickness and a total volume of 136.78 cm³. It weighs 190 g, keeping it reasonably light for extended reading sessions. The device is not weather-sealed, so it offers no splashproof or water-resistant protection.

Display:

screen size 7"
is self-lit
pixel density 300 ppi
Has an e-paper display
has a touch screen
has anti-reflection coating
resolution 1264 x 1680 px
has branded damage-resistant glass

The display is a 7-inch e-paper touchscreen with a resolution of 1264 x 1680 px and a pixel density of 300 ppi, delivering a fine level of detail for text and images. It is self-lit, allowing for comfortable reading in low-light environments, and features an anti-reflection coating to reduce glare under bright conditions. The screen does not include branded damage-resistant glass.

Performance:

internal storage 64GB
has an external memory slot
RAM 4GB
CPU speed 8 x 2 GHz

The device runs on an octa-core processor with a CPU speed of 8 x 2 GHz and is paired with 4 GB of RAM, providing a solid foundation for multitasking and running applications. It comes with 64 GB of internal storage and includes an external memory slot, allowing users to expand available space as needed.

Connectivity:

has a cellular module
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Has Bluetooth
Bluetooth version 5.1
has a search browser
has NFC
is DLNA-certified
has an HDMI output

Wireless connectivity is handled through Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), alongside Bluetooth 5.1, covering the most common wireless use cases. A built-in browser is also included for web access. The device does not support cellular connectivity, NFC, DLNA certification, or HDMI output.

Battery:

battery power 2300 mAh
Has USB Type-C
has a removable battery
Supports fast charging
has wireless charging
has a rechargeable battery
has a battery level indicator

The device is equipped with a 2300 mAh rechargeable battery that charges via USB Type-C, and it includes a battery level indicator to keep track of remaining charge. The battery is not removable, and the device does not support fast charging or wireless charging.

Features:

release date April 2025
has a built-in speaker
has dictionary
supported file types 26
supports text-to-speech
has a socket for a 3.5 mm audio jack
has GPS
has stereo speakers
has an accelerometer
has a compass
Has a radio
has a front camera
has a built-in HDR mode
has a child lock
has a gyroscope

The device includes a built-in mono speaker — stereo speakers are not present — and supports text-to-speech along with a built-in dictionary, making it reasonably capable for audio-assisted reading. It is compatible with 26 file types and features a built-in HDR mode and an accelerometer. There is no 3.5 mm headphone jack, no front camera, no GPS, no compass, no gyroscope, no radio, and no child lock.

Miscellaneous:

has media picker
has notification permissions
has Mail Privacy Protection
Tracks the current position of a mobile device
blocks cross-site tracking
can block app tracking
has Quick Start
has dynamic theming
is a multi-user system
Has customizable notifications
has clipboard warnings
has on-device machine learning
has location privacy options
has camera/microphone privacy options
Supports widgets
has theme customization
has focus modes
has dark mode
supports split screen
has full-page screenshots
supports slow-motion video recording
Has sharing intents
has Live Text
has voice commands
has an extra dim mode
has Wi-Fi password sharing
has battery health check
Can play games while they download
Has offline voice recognition
can offload apps
has PiP
can create panoramas in-camera
Is free and open source

On the software and privacy side, the device is free and open source and supports multiple user accounts, along with a wide set of customization options including dynamic theming, theme customization, dark mode, and widgets. Privacy-conscious users will find location privacy options, camera and microphone access controls, app tracking blocking, clipboard warnings, and device position tracking, though cross-site tracking blocking, Mail Privacy Protection, and Wi-Fi password sharing are not available. The system supports on-device machine learning, offline voice recognition, voice commands, Live Text, sharing intents, customizable notifications, notification permission controls, and a media picker, while focus modes, Quick Start, battery health check, and app offloading are absent. Additional capabilities include split-screen multitasking, picture-in-picture, full-page screenshots, slow-motion video recording, in-camera panorama creation, and the ability to play content while downloading, rounding out a notably broad feature set for this category.

Final Verdict

The Onyx Boox Go Color 7 (Gen II) presents itself as a capable and feature-rich e-reader that punches well above the basics of its category. Its 7-inch self-lit color e-paper display with 300 ppi pixel density, broad file format support, and an unusually flexible open-source software environment make it a compelling choice for readers who want more control and versatility from their device. The generous 64 GB of storage, expandable memory, and solid wireless connectivity further strengthen its appeal for users with large digital libraries. That said, the absence of weather sealing, a headphone jack, and fast charging are real-world limitations that prospective users should weigh against their habits. On balance, the Onyx Boox Go Color 7 (Gen II) is best suited to technically engaged readers who prioritize display quality, software depth, and content flexibility over a more streamlined or ruggedized experience.