Charging Time: High-end heating is about 6 hours of use, low-end heating is about 11 hours of use, and 5 seconds rapid heating. Portable and Compact: Hand warmer is made of high quality ABS material, which is durable, cute shape and easy to carry. The Hand warmer is anti-skid surface treatment which makes the touch more comfortable, Smooth and warm. Large Battery Capacity: Hand heater with 10000mAh lithium rechargeable battery with USB charging port ensures a long using time. It also can be used as a power bank to charge your electronic device. Perfect Winter Gift: This device keeps your hands warm on cold days, which is a perfect gift for family and friends in winter. Specification: Material: ABS Battery Capacity: 10000mAh Input Output Current: 2000mA Input Voltage: DC5V Working Power: 18W Size Chart: 10.9x6.9x4.1cm/4.29x2.72x1.61inch Package Includes: 1 Piece Hand Warmer 1 Piece Cloth Bag 1 Piece USB Cable 1 Piece Lanyard 1 Piece Chinese English User Manual