1Three Levels of Temperature: There are three levels of temperature, the first level is 45 for daily warming, the second level is 55 for menstrual care, and the third level is 65 for dysmenorrhea care. 26 Different Current Frequencies: According to the needs of different groups of people, 6 different current frequencies are set and each mode is upgraded to 19 strengths, which is more delicate and comfortable, and cares for the delicate psoas muscles. 3Large Heating Area: A large area of warmth and full coverage fits the lower abdomen and belly button, circulating constant temperature, covering the cold part of the uterus, and relieving dysmenorrhea. 4Cordless Design: Built in 3.7V 1800mAh lithium battery, bid farewell to bulky power banks, and realize cordless restraint use. Adopting EMS micro current pulse technology. 5Lightweight and Portable: The menstrual heating pad is lightweight and portable, allowing you to relax anytime, anywhere, providing you great using experience. Item Type:Electric Heated Waist Belt Material: ABS Power: 3W Applicable Power Supply Voltage: 5V Battery Type: 3.7V Lithium Battery, 1800mAh (Built in) Core Technology: EMS Micro Current Pulse Technology Massage Modes: 3 Techniques: 6 Kinds Gear Position: 3 Gears Heating Temperature: 45, 55, 65 Charging Time: 2 Hours Use Time: 5 Hours Color: White Weight: Approx. 262g / 9.2oz 1 xWaist Heating Pad 1 x USB Cable