Features: Material: ABS + TPE Function: female body massage. Power mode: USB charging. Vibration frequency: massage vibration with 10 frequencies Service time: about 12 hours Charging time: about 3 hours Product size: 3.07 x 2.2 in Charge： If the power is weak or does not work, but the LED is still on, please recharge. Insert the DC plug into the DC port on the right side of the tongue vibrator Be careful: Plug the main plug into the wall socket. When charging, the LED on the rod interface lights up, indicating that charging is in progress When the tongue vibrator is fully charged (after 3 hours), the LED will go out. Security: Do not use when plugged in and charging When charging, please gently insert the DC plug into the DC port Cleaning, storage and safetys Wash with warm water and soap. Rinse with clean hot water and pat dry with a lint free cloth or towel. Do not use cleaners containing alcohol, gasoline or acetone. Avoid direct sunlight and do not expose it to extreme high temperatures. Products stored in a dust-free place away from other materials