Rapid heating device, takes only three seconds to heat up and raise body temperature. Suitable for relieving menstrual cramps, lower nappies or abdominal pain, this house warming belt device uses the new and upgraded graphene far infrared heating technology, safe, healthy and effective. Long press the switch for 3 seconds to turn on/off, a quick press of the switch changes the temperature modes, 65℃(red), 55℃(white), 45℃(blue). It has overheat protection system and a timer of 30 minutes to automatically shut off. The built-in graphene heating chip is wrapped in a waterproof TPU layer, providing excellent insulation and waterproofing, with no risk of electric shock and can be washed without disassembling, making it easy to clean. Please fully air-dried before use. Ultra-slim and lightweight, it comes with a carry bag for easy storage and portability. Universal USB port, can be powered by power bank, laptop, USB adapter, etc, Please NOTE: Power supply is required for use, not rechargeable, and the power bank is NOT included. The adjustable waistband is connected by hook and loop strap, you can adjust it freely to fit for your abdomen securely and is suitable for various waistlines. The electric menstrual pad is the perfect gift for female, it helps all girls or women to get rid of pain in the womb or lower back and abdomen.