Spec:Removable battery: Easy to use, 4 AAA batteries can be installed for more powerful functions.Removable grinding head: It can be disassembled and tilted immediately after use, which can effectively solve the problem of residual dandruff, avoid growth problems and protect health.Specification:Material: ABS + electronic components + frosted stoneProduct size: 10.5*6.6*5.4cmWeight: 130gCharging voltage: DC 5.0VCharging current: 2ARated voltage: 3.7VRated power: 2.5WBattery capacity: 500 mAApplication time: 50 minutesLow speed speed: 1600 rpm/aboutHigh-end speed: 1700 rpm/aboutPackage includes:1 x Electric Foot Grinder1 x USB Cable2 x Grinding HeadsNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.