Features: [OS Advanced Configuration] Featured with the Android 7.1 OS, powered by RK3399 Six-Core CPU, dual-core Cortex-A72 and Quad-core Cortex-A53. GPU adopts high-end Mali-T860MP4, higher than Mali-T820 of Amlogic S912. [Memory Expandable Storage] 4GB RAM, 32GB EMMC ROM ultimately delivering a richer using experience which makes home entertainment become easy. Also supports TF card reading up to 64GB. [HEVC H.265 VP9 Decoding] H.265 decoding occupies less bandwidth (about 50%) than H.264; H.265 and VP9, powerful decoding capabilities, can decode most of the file formats at present. [UHD 4K Resolution] Based on H.265 HD decoding, it offers 4K * 2K output which provides you high definition viewing and fluent video playing, making it as the highest resolution for home movies. [WiFi LAN BT4.1] 2.4G / 5G WiFi and 10 / 100 / 1000M LAN provide reliable network. Once connected X99 with your WiFi or RJ45, your HDTV becomes into a smart streaming machine. Note 1: Please connect the TV BOX with your 4K TV first, and then 4K resolution option will show in resolution setting. Note 2: 2.4GHz air mouse remote control is powered by 2 AAA battery (not included). Highlights: OS: Android 7.1 CPU: RK3399 Six Core (Dual Cortex-A72 Quad Cortex-A53) GPU: Mali-T860MP4 RAM: 4GB; ROM: 32GB EMMC Expanded Storage: Supports TF Card up to 64GB WiFi: IEEE.802.11a/b/g/n/ac 2.4G / 5G WiFi Ethernet: 10/100/1000M LAN BT: V4.1 DisplayPort: HD port and Type-c port, support double screen Language: English, French, German, Spanish, Italian, etc. multilateral languages. Support mouse and keyboard via USB; Support 2.4GHz wireless mouse and keyboard via 2.4GHz USB dongle. Decoder Format: 4K VP9 video decoder, H.265/H.264 video decoder, 1080P other video decoders (VC-1, MPEG-1/2/4, VP6/8). Media Format: AVI, TS, VOB, MKV, MOV, ISO, WMV, ASF, FLV, DAT, MPG, MPEG. Audio Format: MP3, WMA, APE, FLAC, AAC, OGG, DDP, WAV. Picture Format: HD JPEG, BMP, GIF,PNG, TIFF.