FAST HEATING & IMMEDIATE RELIEF The heating pad is made with upgraded graphene technology that heats up in just seconds. Heating up more evenly and conveniently, it delivers enough heat quickly to help improve blood circulation, providing you with more effective and targeted treatment to relieve period cramps and menstrual cramps. LIGHT & HANDY: it's ultra-thin and ultra-lightweight, weighing just 140g (0.3lb). Our heating pad is only 1cm (0.4 inches) thick, The heating pad has a built-in 3000mAh rechargeable battery and can be easily adjusted to 2 temperature settings (high 130'F, low 113 F) with a simple push of a button. The heated belt turns off automatically after 1 hour and can be used again with the push of a button. CORDLESS & FLEXIBLE: Cordless and portable, can be folded and carried.