The Xiaomi Box Plus is a small streaming device that supports 4K resolution playback and comes with an IR remote control, HDMI cable, and power adapter. It has a quad-core processor, 2GB of RAM, 4GB of internal storage, and ports for USB, HDMI, Ethernet, and microSD. The device runs Android and can stream 4K video at 30fps as well as various audio and photo formats.

2. Detailed specifications for the Xiaomi Box Plus
New interface
 Supports Micro-SD MMC
 Support 4K Ultra HD resolution (3840 x 2160 pixels, four times the resolution of 1080p)
Size and weight
Height: 19.5 mm
Width: 101 mm
Depth: 101 mm
Weight: 200g

3. In the box
 xiaomi TV
 IR remote control
 Adapter
 HDMI Cable
 Manual and warranty card
Processor
 Cortex-A9, 2.0GHz quad-core
Hardware
 GPU: Mali-450MP6, 6 +2 nuclear 600MHz
 Memory: 2GB DDR3 dual-channel user
 User Memory: 4GB eMMC Speed Flash
 Bluetooth 4.0
 Wireless LAN: 2.4GHz/5GHz 802.11a/b/g/n
Output Resolution
 4K (3840 X 2160)
Operating system
 By Google CTS Certification Andrews 4.4 system
Ports and Interfaces
 USB: Micro-USB interfaces: a standard USB 2.0 interface
 Micro-SD slot: one, the largest expansion of 64GB
 Ethernet: RJ45
 HDMI: Standard HDMI1.4
 Composite video and audio: 3.5mm composite video and audio output, support for digital audio output
(SPDIF)
 Power Interface (5.2V, 2.1A input)
Video Performance
 Encoding formats: H.264 support to 4K @ 30fps, MPEG1/2/4 up to 1080P @ 60 frames / sec; VC-1,
WMV, real7/8/9 up to 1080 @ 60 frames / sec;

4.  Video formats: RM, FLV, MOV, AVI, MKV, TS, MP4
 Support 3D video output
Audio Performance
 Bit rate: MP3 64kbps ~ 320kbps, WMA 64kbps ~ 320kbps, APE / Flac ≤ 1500Kbp
 Audio formats: MP3, WMA, APE, Flac, AAC, Ogg
 Decoding support Dolby Digital Plus, DTS
Photo Formats
 Supports JPG, BMP, GIF, PNG and other formats
References
Website:
http://www.mi.com/hezi
Video Source:
https://www.youtube.com/watch?v=7NRfksK0cLI&noredirect=1#t=109