You can also check HausBell® Mini H7 2.4GHz Wireless Entertainment Keyboard with Touchpad for PC, Pad, Andriod TV Box, Google TV Box, Xbox360, PS3 & HTPC/IPTV **With Extra Battery** for a better comparison at Smarttvs.biz.

Works as which movement air into an accurate on the screen. - It as keyboard, you can replace usb - works a remote, can some important your TV Home multimedia education, training, meetings, and computer remote control screen smart TV, hard player, Connection: RF wireless Operating range: without disturbance no limit. voltage: 3.3V key: 92 Battery lithium +5db 50mA Charging <330mA System: Windows, TV, Note: product has 2.4G wireless but no bluetooth function 2. product can below 2A can out product If do not item no need it down, product automatically enter.
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