Reusable and Safe: This rechargeable hand warmer can be charged via a USB port on a laptop or wall outlet. Throw away those disposable chargers Choose a reusable way to warm your hands Night Light: The hand warmer has a small night light. Press the power button once to turn on the warm night light, and press the power button twice to turn on the heating function, and can continue to heat up for 8 hours. Sturdy and Durable: The hand warmer is made of ABS and PP material. You can put the hand warmer in your pocket or bag at will, or hold it in the palm of your hand so that you can carry the warmth in the palm of your hand. Perfect Gift: This stylish and warm hand warmer is a must-have gift for you and your lover in the coming cold winter. It is a great Christmas gift and New Year gift, very suitable for outdoor sports. Suitable For: This stylish and warm hand warmer is a must-have gift for you and your lover in the coming cold winter. The hand warmer is suitable for outdoor camping, mountaineering, home office, etc.70mm*70mm*10mm.