... power with well tested.Come with all accessories:battery,charger,manual,safety glasses in aluminum carrying case.Technical parameter: Output ... recharge battery(included)SwitchConstant on/off buttonSupporttemperature control,key switch,led indicatorExpected lifetime(hours)>5000 hoursLaser type:Visible laser diodeOperating temperature0 ... battery,battery charger,safety keys 2,key 2,manual,aluminum case.