Modes that allow you to easily adjust different temperature and vibration modes. 4. High frequency vibration: menstrual belt with double vibration motor and high frequency, which can vibrate 7000 times per minute, helps relieve waist discomfort. 5. Safe to use: intelligent heating belt with temperature control chip, with automatic timing to avoid forgetting to turn off, prevent excessive heat compression. Specification: Item Type:Electric Heated Waist Belt Material: ABS Size: approx. 18 x 9 cm / 7.09 x 3.54 inches. Battery: lithium battery (included). Battery capacity: 1800mAh 4 Vibration Gears:01:Low frequency relieves pain 02: Mid-frequency relieves massage 03:Strong high frequency vibration massage 04: comprehensive care massage 4 temperature levels: 01: 45°C daily warm uterus. 02: 55℃ menstrual care. 03: 65 °C. Painful menstrual care. 04: combination care Application: 1. Tie the heating belt around your waist. 2. Short press the on/off button to start, and then briefly press to switch the temperature, and long press to shut down. 3. Short press the vibration button to open the vibration function, and then briefly press to change the strength. Package list: 1 x waist massage belt. 1 x USB charging cable. Note: Please note that the color of the straps of this product will be sent randomly, and make sure you do not mind before ordering.