ONYX BOOX Darwin 4

ONYX BOOX Darwin 4 is a device for reading electronic books with the E Ink Carta Plus screen of the latest generation, which has a higher definition and contrast, the built-in MOON Light system and the SNOW Field function. The reader posseses outstanding technical specifications: a high-performance 2-core processor, 512 MB of RAM and 8 GB of internal memory. A Wi-Fi module and a built-in browser allows the user to browse the Internet. The Android operating system thanks to its rich choice of programs allows you to open text files of almost any formats and to configure settings of the text for more comfortable reading.

What is E Ink Carta Plus

E Ink Carta Plus is the latest generation of screens made by "electronic paper" technology. Compared to the previous models, this screen has a higher definition and contrast. Pixel density of the screen is 300 dpi that is a record for this type of E Ink screens and corresponds to the high-quality paper printing. Reading on such screens is as comfortable as on regular paper pages.

What is SNOW Field?

SNOW Field is an operating mode of the screen, allowing to reduce the number of artifacts on the screen within partial refresh. If this function is on, full refresh of the screen is not needed.

Screen lighting

Screen lighting

The unique MOON Light technology enables one to use the device in the dark or under poor lighting conditions. When this function is used, soft luminescence of the screen (comfortable for reading) is being generated.

Capacitive Multi-touch screen

E Ink Carta Plus display has a lighter base and higher contrast than other screens of this class. It allows one to read in bright sunlight and has a high rate of screen refresh. Absence of a shimmering light and the principle of image formation with E Ink method makes reading comfortable for eyes. Capacitive sensor, supporting a Multi-touch function, provides an easy control with fingers.

What is MOON Light?

MOON Light technique uses a reflective light distribution. The light-conducting layer is located over the display. The light goes through this layer and is reflected towards the screen being absorbed by the dark elements of the image and then this reflected light enters the eyes. On sensations this light is similar to the reflected light from an external source. This kind of lighting is significantly more comfortable for reading than backlit LCD displays.

High performance

High performance

A dual-core processor with 1 GHz clock rate and 512 MB of random access memory ensures comfortable work with difficult documents. And 8 GB of nonvolatile memory and a microSD-slot supporting memory cards up to 32 GB allows the user to store up to 35000 books.

Format support

The BOOX software allows the user to open files of various text and graphic formats. When reading you can change font style and size, disposition of pages, insert bookmarks, add your own fonts and zoom documents at your will.

Format support
Built-in dictionaries

Built-in dictionaries

ONYX BOOX Darwin 4 has pre-installed English-Russian and Russian-English dictionaries. Want to translate an unknown word? Just touch it!

Google Play store

The model works on the Android 4.2 operating system and has a pre-installed Google Play app. This feature significantly expands the functionality of the device and allows the user to install a large number of additional programs.

Google Play store
Smart cover

Smart cover

The eReader comes with a smart cover which not only provides effective protection of the screen, but when closed turns automatically the device to sleep mode.


Software development

Software development

Darwin 4 allows the user to write personal software using the potentials of the Android 4.2 platform.

Continuous work

Low power consumption of E-Ink displays and battery capacity of 3000 mAh provides up to a month of autonomous work.

Continuous work
Language support

Language support

The BOOX allows the user to read documents in different world languages.Amongst them there are such languages as Russian, English, German, French, Spanish, Arabic, Swedish, Chinese, Japanese and many others.


ONYX BOOX Darwin 4
ONYX BOOX Darwin 4
ONYX BOOX Darwin 4

ONYX BOOX Darwin 4 is a device for reading electronic books with the E Ink Carta Plus screen of the latest generation, which has a higher definition and contrast, the built-in MOON Light system and the SNOW Field function. The reader posseses outstanding technical specifications: a high-performance 2-core processor, 512 MB of RAM and 8 GB of internal memory. A Wi-Fi module and a built-in browser allows the user to browse the Internet. The Android operating system thanks to its rich choice of programs allows you to open text files of almost any formats and to configure settings of the text for more comfortable reading.

Display6", E Ink Carta Plus, 16 shades of grey, contrast ratio 14:1, 1072 × 1448 pixels, pixel density 300 ppi
LightingMOON Light
ProcessorDual-core, 1 GHz
RAM512 MB
Internal memory8 GB
Expansion slotFor micro SD/microSDHC cards
USB interfacemicroUSB
Supported file formatsText: TXT, HTML, RTF, FB2, FB2.zip, MOBI, CHM, PDB, DOC, DOCX, PRC, EPUB
Graphic: JPG, PNG, GIF, BMP
Others: PDF, DjVu
Wireless interfaceWi-Fi IEEE 802.11 b/g/n
BatteryLi-on 3000 mAh
Operating systemAndroid 4.2
Size170 × 117 × 8,7 mm
ColorBlack
Weight182 gr
KitONYX BOOX Darwin 4 eReader
User's manual
Case-cover
USB cable
Power adapter 220 V
Warranty card
Warranty period1 year

Note: Since a part of the Flash memory size is system software, the portion available to the user is less than the total size of the memory chip.

The device is designed primarily for reading electronic books, but has some additional features which are defined by the installed software. For example, the current firmware has functions such as calendar, dictionary, access to the Internet, and others.
The device is freely reprogrammable on request of the user who can install, delete and create programs.
The device has a battery that provides long, autonomous usage.

For ONYX BOOX Darwin 4 there are no updates
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Repair and service

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