Specification:Item Type: Electric Foot Callus RemoverMaterial: ABSBattery capacity: 600mAhBattery type: Lithium ion battery (the host is delivered with built in battery)Use method: 1, Choose suitable for your grinding head, press the switch can start to use, it is recommended to repair after care, with long term use, double improve the nursing effect. 2, It is recommended that the frequency is once a week, so that the foot skin fully absorb nutrition. 3, Each repair should not stay in the same place for too long, so as not to cause burning sensation. 4, Grasp the strength when using, can be tried from weak to strong, so as not to cause skin damage.PackageList:1 x Electric Foot Callus Remover1 x Replacement Head1 x Protective cover1 x USB Cable1 x Instruction Book