Features: Amlogic S912 CPU, Octa-core, Cortex-A53 up to 1.5GHz, rapid and stable, giving you high-speed feedback. 2GB RAM and 16GB ROM enable to run the device smoothly and allow users to store a very large amount of data. H.265 decoding technology saves half bandwidth. 4K output provides you high definition viewing and fluent video playing. 2.4G / 5G dual band WiFi and BT4.0 ensure high-speed data transfer and convenient wireless connection. With expansion bay, it supports standard 2.5 inches SATA HDD or SSD up to 1TB. Can be used as a mobile hard disk drive. Supports multi-account management and sharing. Share designeated file to specified users. Note: 1. Please connect the TV BOX with your 4K TV first, and then 4K resolution option will show in resolution setting. 2. Remote control is powered by two AAA batteries (not included). Highlight: OS: Android 6.0 CPU: S912 Octa-core Cortex-A53 1.5GHz GPU: Mali-T820 RAM: 2GB ROM: 16GB BT: V4.0 WiFi: IEEE 802.11 b/g/n/ac, 2.4G / 5G dual band WiFi RJ45: Support RJ45 10/100M SATA: 6Gbps, compatible with SSD and HDD Support Maximum External Hard Drives Capacity: 1TB Other Functions: Airplay, DLNA, Miracast Decoder Format: 4K VP9, H.264/AVC, H.265 Video Format: AVI, MKV, MP4 Audio Format: MP3, WAV Photo Format: BMP, GIF, JPEG, PNG