Function and use: USB charging, 30-frequency vibration, Charging time: 2.5-3 hours Use time: 50 minutes to 1 hour Charging status: breathing light flashes Full state: breathing light is always on Operating instructions: Turn on the power, press and hold the power button on the vibrator for 3 seconds to turn on the power, and the power indicator will be on at this time. Turn on the heating, when the power is on, press the power button once to turn on the heating function. At this time, the power indicator flashes red. (Only the aromatherapy purple body temperature model has a heating function) Adjust the frequency. When the power is turned on, short press the FM button to adjust the frequency. At this time, the FM indicator flashes with the vibration rhythm. The vibrator has 10 built-in vibration frequencies, and you can select different frequencies by briefly pressing the FM key.