1. Material: ABS, silicone
2. Waterproof grade: IPX7
3. Massage principle: kneading and vibration
4. Charging method: USB charging
5. Product efficacy: comfortable massage, relieve fatigue, clean scalp
6. Bionic technique, vibration massage
7. Silicone contacts, high resilience, soft and safe
8. Ergonomic design of handle arc
9. Size: about 136x100x111 mm
10. Weight: about 412 grams