How to Use: 1. Tie the belt around your waist 2. Operation Touch the vibration heating switch: ①Double click the touch switch to turn it on ②Touch the switch to switch gears ③Three modes cycle in turn Touch the temperature to heat up and turn off ①Double click the touch switch to turn it on, ②Touch the switch to switch gears ③Three kinds of temperature cycle in turn 3. Press and hold the key to turn off the power Specification: Item Type: Menstrual Heating Pad Applicable Symptoms: back pain, cold hands and feet, menstrual cramps Efficacy: Warm uterus / warm stomach / warm waist / warm belly Battery type: Lithium ion battery Battery capacity: 1800mAh (shipped with built in battery) Warming gear: 45-55-65℃ Package List: 1 x Menstrual Heating Pad 1 x USB Cable 1 x Manual