Feature:1. ADJUST: This electric heating pad uses USB charging which is more convenient. With 4 gears adjustment you can choose the mode according to your needs.2. FAST HEATING: 10 seconds fast heating, rapid heat generation, no waiting. Continuous improvement, just in time to fully charged, you can enjoy the warmth.3. HIGH SAFETY: Using safe materials, heat evenly, high safety, no need to worry about heat shortage or overheating scald, warm range: 50, 55, 60 degree centigrade.4. APPLICATION: You can use our products in different scenarios, whether you are resting, reading, driving, or working, it will not have too much influence to you.5. SOMPACT: Small size and flexible, lightweight and compact, easy to carry with, it is the best gift for girls and women, with belt, convenient to use.Specification:Item Type: Menstrual Heating PadMaterial: ABS, deer velvet, electronic componentsSize: Approx. 185 x 85 x 25mm / 7.28 x 3.35 x 0.98inBattery: Lithium battery, 5V, 1800mAH (shipped with built in battery)Charging time: 2 hoursUsage time: 2 hours.Package List:1 x Menstrual Heating Pad1 x USB Cable1 x Instruction Book