Feature:1. Quartz Sanding Head: Quartz sanding head, trace mineral material, scientifically solve different foot problems.2. 2 Types: Comes with a fine roller for polishing and routine maintenance, and a coarse roller for smoothing out stubborn calluses and dead skin.3. 2 Levels Speed Adjustment: 1 level low speed, suitable for delicate feet skin, and 2 level high speed, suitable for middle aged and elderly rough feet skin.4. Ergonomic Design: Features an ergonomic rod design for a more natural back and forth movement.5. Simple Operation: Simple and easy to use on both feet, it is suitable for use on heels, toes, sides and balls of feet.How to Use:1. Read the user manual2. Check whether there is electricity, directly adjust the level switch, there are two levels that can be adjustedSpecification:Item Type: Electric Foot GrinderMaterial: ABSSpecifications: 1pcBattery Type: Nimh Rechargeable Battery (shipped with Built in Battery)Battery Type: AABattery Capacity: 600mahInput Voltage: 5vInput Current: 1ACharging Method: USB ChargingLevel: 2 Level Controllable Package List:1 x Foot Grinder1 x Coarse Grinding Head1 x Charging Cable1 x Brush1 x English User Manual1 x Grinding Head Protection Cover