The best gift for her: The lightweight menstrual cramp simulator can be hidden under a shirt. 25.5-55 inches (approximately 65.9-135.9 cm) adjustable tightness allows you to move freely indoors or outdoors. A unique self-care and relaxation gift, suitable for women, girlfriends, daughters, and mothers on birthdays, Valentine's Day, anniversaries, and Christmas. <br>Smart LED Display: With the remaining battery percentage, heating mode temperature, and vibration level displayed on the LED display, it is more convenient than ordinary small heating pads with only button controls. <br>3000mAh Battery Safety Design: The rechargeable heating pad has a built-in 3000mAh large battery, ensuring 5-9 hours of working time. Smart protection automatically shuts off the device after 30 minutes of continuous use for safety. You don't need to wake up in your sleep to turn it off. <br>[Upgraded 6 Heating/Massage Modes] Upgrade the menstrual soothing heating pad to 6 heating modes, from 104°C to 150℉, and 6 massage levels to better meet your different daily needs and preferences. The vibration mode can be used simultaneously with the heating function or as a muscle massager on its own to soothe pain. Get rid of wires and be portable: Sometimes you need a wearable heating pad but can't sit in one place. Our cycle heating pad allows you to get on with your life while you enjoy the comfort, you won't be tied to a wall or power cord, and you won't have to keep heating your water bottle.