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Using the ALLWINNER A31

quad core CPU


Cortex X7 core
Using the highest power efficiency Processors A7 of the ARM history,quad core 

Eight GPU
Using the Power VR SGX544



Integrates the PowerVR SGX544MP2 dual-core graphic display unit from the Imagination. This GPU comes from the same company as the Apple Ipad tablet series, Amazon Kindle Fire series of Graphics chips. Its pixel filled reate is up to 3000M/S, and the triangle rendering is also up to 100M/S

2G DDR3 cache


Using 64 BIT dual channel DDR, run much faster, more efficiently

8G Flash storage


Using 16BIT date bus, with doubled speed, and the interactive date is much quicker

Using the smart power management IC


Smarter: Built-in high intelligent energy balance system IPSTM, integrated over-voltage, over current, over temperature protection functions, IIC control, dynamic smart regulator, more energy efficient









Support 4K*2K super
HD hardware decoding


The 4K video decoding resolution is up to a staggering 4096x2304,the total pixelsof the whole screen is more tan 8 million,It is chearer quadrupled than the full HD 1080P movies nowdays.It brings visual shock effect to us .     













Support to play Blu-ray
3D movie output directly 


Integrated HDMI 1.4, support to play Blu-ray
3D movie output directly













Built-in High definition camera, everything is near to you





B4K use the A31 dual-core main chip, which builted in better image signal processing techniques.It is used 2 million pixel camera and make the photes and videos more clearl and natural. If use it with large size HD LCD TVs, you will can make free calls and have extraordinary experiences





Buit-in Microphone, free internet call





Siri is here, please speak if you have any questions
Smaillest space, built-in smart microphone,buile-in camera. While using QQ, SKYPE and other chat APK, the U4K will become a videophone quickly.









Suspended Video and Multitasking operating


4K Player Multipe video suspended displayed





                Four videos play simultaneously





Browsing dynamic video










Bt 4.0



Bulit-in Bt 4.0,saving electricity,low-power,lower latency 3 ms ,the transmission is over 100m. It supports AES-128 encryption, and also be compatible with 2.0,2.1,3.0     










Built-in WiFi module      



Integrated advaned WIFI technology, you can connect it with the wireless router easily,make you enjoy the super-fast internet speed. Whether for the toutine or for online videos, the processing speed will have greatly inproved  















Support extra USB device











Used in two ways



1. Hanging mode


You can hang it at the back of the TV. It is more convenient for you to make

video phone from QQ, SKYPE






2. Desktop mode


You can put it on the desk near to the TV,and easy to plug the USB disk and
Micro SD card











Interface instruction










Size instruction











Product specification



 OS  Android 4.2
 Main Chip  All winner  A31/quad-core 1.0GHz Cortex-A7
 Memory  2GB dual channel 64-bit DDR3
 Storage  8GB Nand dual channel  16-bit Flash

 Buit-in Imagination eight core Power VR SGX544 support

 2D/3D/ Open GLES2.0(AMD Z430) /OpenVG1.1 (AMI Z160)

 @27M Tri / sec/

 Bt  Bt 4.0
 Network  Wireless802.11b/g/n, WAPI (Ralink8188), RJ45
 Expand Memory  Micro TF 2-32GB
 IO/Ports  Micro 5pin USB/USB2.0 data transfer OTG and host expand
 Keyboard  Support software keyboard, 2.4G wirless keyboard. IR

 AAC, AAC+, Eaac+, AMR-WB, QCP, MP3, WMA, WAV, MIDI,  



 WMV / ASF / MP4 / 3GP / 3G2M4V / AVI / MJPEG / RV10 / 

 DicX VC-1 / MPEG-2 / MPEG-4 / H.263 / 1280*720P HD 30

 fps 1080P / 720*480 D1 30 fps / Blu-ray 3D@30fps / 4Kx2K

 video /  H.264 HD/RMVB

 HDMI  1080P
 Power  5V~2A














Optional accessories










Size(L*W*H): 17.7x15x5.8 CM
Weight: 0.45 Kg






N.W/CTN: 9    kg
G.W/CTN: 9.8 kg
CTN Size: 37x32x31.5 CM



4K Android Box 型号:B4K
large size Feedback>> Hits:   update:2016-06-02 16:31:19
Technical support
Tel: 86-755-2398 1801
  • Rockchip RRK3066 / RK3188
  • ALLWINNER A20 / A31S / A31
  • HDMI
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