Number of keys:99
·Total stroke of buttons:4.0mm.
·FN key multifunctional
.Product size: 406.76x139.31x43.28+/-0.1mm
.Product weight: approximately1205g (excluding wire/receiver)
Approximately 1254g (including wire/receiver)
.Charging voltage/current:DC5V1250mA.
·Rated voltage: DC 3.7V (fully charged with4.2V)
.Rated current:250mA @3.7V (default light effect)/20mA (turn off all lights)
·Battery life: approximately 32 hours (default light effect)/
approximately 400 hours (all lights off)
.Battery capacity:8000mAh (2x4000mAh)rechargeable lithium battery
·Charging interface: Type-Cinterface.
·System Requirements:
Wired / 2.4G Mode: Compatible with all Windows operating systems (WIN XP, WIN7, WIN8, WIN10).(Driver may be required for WIN95 or WIN98.)