Internal Battery - Charged by Charger (included). Four heads are easily interchangeable to perform a variety of operations. WATER PROOF - Can be cleaned on the go and used for indoor shower. Ergonomic grip handle for extended use. Nickel-Cadium battery: fully charged - up to 40 minutes of use. You can work with the device even without charging - with a direct connection to the power outlet. | Package Contents: 1. Body 2. Cleaning Brush 3. Charger 4. Dry Skin Removal Head - Made of stone with rough coating for effective removal. 5. Shaving head - for quick removal of skin from the skin surface. 6. Head of hair from the root (epilation) - Has a tweezers system that removes hair from the root in rotary motion. 7. Bikini Head / Swimming Pool - Hair removal head suitable for sensitive areas.