BTC S320 2.4GHz Portable Wireless Keyboard Mini with Touchpad (Black) International Version - Product may not include US Warranty 83 keys, 2.4GHz wireless keyboard with Touchpad; Touchpad DPI adjustable; Built-in high sensitive smart touchpad with 360-degree flip design. Mini QWERTY keyboard with multimedia control keys and PC gaming control keys; Auto sleep and auto wake mode. Innovative shape, portable and elegant; Ergonomically handheld design easy to carry and operate. Build-in removable rechargeable lithium battery ensures longer standby time. Perfect for PC, iPad, Android TV Box, Google TV Box, Xbox360, PS3, and HTPC/IPTV.