How to Use: a. Insert the massage head into the massager head area and fix it. b Turn on the power switch, there are three gears, short press the switch to switch gears, the 1st gear is red, the 2nd gear is green, and the 3rd gear is blue. Long press to shut down. c. Charging: Type‑C charging, insert the USB cable into the adapter, and link the tail Type‑C. It is automatically turned off every 10 minutes. It is recommended to start again after 10 minutes. How to replace the vibrating head: press the vibrating head into the position of the head when it is turned off. If necessary, pull out the vibrating head. Specification: Item Type: Massage Gun Material: ABS Built In Battery: 2600mAH Gear: 3 Gears Locked Rotor Thrust: Approx. 6.5kg / 14.3lb Amplitude: Approx. 12mm / 0.5in Package List: 1 x Massage Gun 4 x Massage Head 1 x USB Cable 1 x Manual