Features: *High-Quality Material: This product is made of high-quality material, which is wear-resistant and durable and can be used for a long time. *Portable: The mini hand warmer bracelet is small in size, easy to carry and easier to put in your pocket, perfect for cold winter outdoor sports. *Multi-function: This hand warming bracelet has overheat protection, heat therapy and pain relief functions, promotes bloods circulation and helps relax muscles. *Wide range of uses: This hand warmer bracelet can continuously heat and keep you warm, making you feel more comfortable in the cold winter. The silicone bracelet does not affect daily work and is convenient to use. It is very suitable for hiking, traveling, camping, cycling, etc. . *Exquisite gift: This hand warmer bracelet is the best gift for children, teenagers, boys, girls, men, women, the elderly on Christmas, birthday. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: silicone Product size: with silicone: 279*44*16MM, length without silicone: 62*44*16MM Charging input: 5V-1A output power 1.5W MAXs Battery capacity: 1000 mAh Power supply mode: USB Package List: 1 x Hand Warmer Bracelet