materialaastainless steel battery capacityaa3.6V/600mAh Ni-MH battery chargeraa6V DC100mA motor power:290 DC3.6V/3W material:stainless steel battery capacity:3.6V/600mAh Ni-MH battery charger:6V DC100mA motor power:290 DC3.6V/3W cock size:19-22mm six hours charge can open 40 to 50 cock rechargeable electrics corkscrew