... : battery led off,power led flash,power blue led flash<3%: battery led off, power led flash,power blue led off KeyboardCapital ... ,Wireless,Battery on80%~100%CapLock, NumberLock,Wireless,Battery ,Power LED on Physical CharacteristicsDimension275mm*187mm*21mm Thickness28.8mm Weight< ... WMV-HD Facial recognition Facial recognition to logging in windows, detect leave to lock the system,Single Sign-On ...