... 13 keys Keyboard material ABS Key structure Scissor structure Operating current <5mA Operating voltage 3.7V Energy-saving mode without ... is a portable Bluetooth keyboard with a high-capacity digital mobile power: Imports of high-performance polymer batteries, the capacity ... , discharging the output line by matching plus adapter, can give mobile phones, games machine, IPOD, IPHONE, IPAD, PDA, MP4, MP5 ...