Feature: 1. Temperature Display: After turning on the electric hand warmer, the high temperature gear displays 60 degrees Celsius and the low temperature gear displays 45 degrees Celsius. 2. Compact And Portable: Rechargeable hand warmer is small and heavy, so it can be used in your hand without taking up too much space. It is easy to carry and use, and it can also be put directly into your pocket. 3. Fast Heating: Pocket USB warmer can heats up for 3s, and then reaches the maximum interval in 30s, and continuously circulates at 4560 Celsius, which will keep you warm. 4. Gifts: Electric hand heater is very suitable for warm gifts for your dear family and friends, so that they can feel warm in winter, or as a surprise for them. 5. Soft Glue: The arms on both sides of electric hand warmer are made of environmentally friendly soft glue, which will make you feel soft when you put it in your pocket or hold it in your hand. Specification: Item Type: Electric hand warmer Material: ABS, aluminum alloy Battery Type: Lithium ion battery(built in) Battery Capacity: 6000mAh Height: Approx. 99mm / 3.9in Width: Approx. 40mm / 1.6in Extend Arms Size: Approx. 65mm / 2.6in The Maximum Distance Between Earmuffs: Approx. 79mm / 3.1in Package List: 1 x Electric Hand Warmer 1 x Charging Cable