Features: [Android 7.1 Nougat OS] Runs on the latest Android 7.1 Nougat System which is perfect in productivity, stability and performance, along with various of features and optimizations, delivering an improved user experience. [RK3328 Quad-Core CPU] Powered by high-performance RK3328 Quad-Core CPU, ULEWELL Z28 mini will be able to play 4K videos with H.265, H.264 and VP9 codecs. It also features a Penta-core Mali-450 GPU. [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 decoding, it offers 4K output which provides you high definition viewing and fluent video playing, making it as the highest resolution signal available for home movies. [Storage WiFi BT4.0] 2GB DDR3, 16GB eMMC Flash offer more space for richer using experience. 2.4G WiFi ensures reliable network and BT 4.0 makes home entertainment easier. Note: Please connect the TV Stick with your 4K TV first, and then 4K resolution option will show in resolution setting. Highlights: OS: Android 7.1 CPU: RK3328 Quad-Core Cortex-A53 64-bit GPU: Penta-Core Mali-450 up to 750Mhz+ SDRAM: 2GB DDR3; Flash: EMMC 16GB WiFi: 2.4G WiFi High Definition Video Output: 4K USB Host: 1 high speed USB3.0 Supports mouse and keyboard via USB; Support 2.4GHz wireless mouse and keyboard via 2.4GHz USB dongle. Control Mode: USB Wired / Wireless Mouse (not included). OSD type of languages: Chinese, English, etc. multilateral languages. Video Decoder: Support H.265 hardware decoding. Support MPEG-1/2/4, H.263, H.264, AVS, VC-1, RV, VP6/VP8/VP9, MVC 3840*2160 60FPS. Video Encoder: H.264, H.265, VP8, MVC (4K*2K). Media Format: Avi, Ts, Vob, Mkv, Mov, ISO, wmv, asf, flv, dat, mpg, mpeg. Music Format: MP1, MP2, MP3, WMA, WAV, OGG, OGA, APE, FLAC, AAC, M4A, 3GPP. Photo Format: JPG, JPEG, BMP, GIF, PNG, JFIF.