Mini Butterfly Massager can be used about 20 times after only 2 hours of full charge 15-20 minutes for one use. USB charging can provide a more stable power supply with a longer service life. 1. Stick the lymphatic drainage massage stick where the body needs it. 2. Turn on the power and select a mode.3. Adjust the output level and work for 12 minutes per person.4. Press the "OFF/DEC" button until the light goes out(Running time: 12 minutes). The mini cervical massager has good adhesion, strong grip, comfort, softness, and breathability, and is easy to store and use.