D8 Mini Keyboard with Touchpad, Colorful Backlit, Mini Handheld Remote

For the lecture, sales manager, presenter, and others, who can this mini keyboard to conduct a presentation and operate the PC wirelessly from within a 32-foot radius. Perfect for PC, Pad, Android TV Box, Google TV Box, Xbox 360, PS3, HTPC, IPTV, etc. Specification: Key numbers: 79 Measurements(L*W*H): 4.9* 3.4*0.7 inch , Weight(grams): 130g Operating range: 30 feet(MAX) , Operational current: 3. 7V Sleep current: +5db , Max Charging current: <200mA Battery capacity: ≥ 300nAh , Battery type: BL-5C Applicable Systems: Windows 2000 Windows XP Windows Vista, Windows CE, Windows 7, Windows 10 Linux(Debian-3.1,Redhat-9.0 Ubuntu-8.10 Fedora7.0 tested)