1. Eight Frequency Strength To Choose.2. Internal And External Stimulation At The Same Time.3. ABS Material (Body) And Silicone Material (Head), Glaze Spraying Technology, Feel Good.4. OEM Is Available If Order Is Over 1000pcs.5. USB Chargeable Lithium Battery, Safe And Convenient.6. Once Full Charge Can Be Used For 45min In The Most High Power.