Features: Android 8.1 OS RK3229: Comes with Android 8.1 OS, powered by the High-performance RK3229 Quad Core CPU that can reach speeds of up to 1.5GHz, including a Mail-400 GPU. 2GB RAM 16GB ROM: 2GB RAM and 16GB ROM provide plentiful room to quickly run the device with expandable storage up to 32GB, it also greatly improves the reliability of your TV Box. HEVC H.265: Bandwidth saving Lifting speed: H.265 hardware decoding can save 50% bandwidth resources, let you watch the 4K movie smoothly. Every detail of the screen is lucidity. UHD 4K Resolution: Supports 4K UHD video hardware decoding, which provides you high definition viewing and fluent video playing, making it as the highest resolution signal available for home movies. Your Own Home Theater: Once connected docooler R39 with your WiFi or RJ45, your HDTV becomes into a smart streaming machine, making home entertainment easier. Highlights: Brand: docooler Item Model: R39 Firmware Model: V88 OS: Android 8.1 CPU: RK3229 Quad-Core 32bit GPU: Mali-400 3D: Hardward 3D graphics acceleration SDRAM: 2GB DDR3; FLASH: 16GB NAND FLASH Expanded Storage: Supports SD / SDHC / MMC cards, up to 32GB USB host: 4 High speed USB 2.0, support U DISK and USB HDD Video Output: Supports up to 4K * 2K output WiFi: 802.11 b/g /n, 2.4G WiFi LAN Ethernet:10/100M BaseT, standard RJ-45. Mouse/ Keyboard: Support mouse and keyboard via USB; Also support 2.4GHz wireless mouse and keyboard via 2.4GHz USB dongle. Media Format Supported: Video Decoder: Support 4K 30fps H.264 and 4K 60FPS H.265 Video Decoding, Multi-format. 1080p video decoding. 1080P video decoding including H.264 and VP9. Support Video Formats: WMV / VC-1 SP / MP / AP, MPG, MPEG, dat, avi, mov, iso, mp4, rm, MPEG-1, MPEG-2, MPEG-4, H.263, H.264, H.265, AVS, VC-1, VP9, MVC, realVideo 8/9/10, VP8/9, up to 2160P. Support Music Formats: MP3, AAC, WMA, RM, FLAC, OGG. Support Photo Format: JPG, JPEG, MJPEG, PNG. Note: 1. In setting, three launchers can't be switched by remote control in the main screen, only can be controlled by mouse. This is a factory default launcher. If customer want to control, please use a mouse. 2. Do not support the playback of MKV format 4K video. 3. Please connect the TV BOX with your 4K TV first, and then 4K resolution option will show in resolution setting. 4. The remote controller of the product belongs to attached and functional accessory. If part of product functions can't be controlled by the controller, please purchase external mouse or air mouse.