Features: 1. 3s Fast Heating: This rechargeable hand warmer heats up quickly in 3 second, three levels of temperature: 45C, 50C, 60C, to meet your different needs. 2. Use As A Power Bank: Hand warmer has a built-in large capacity battery, which can fully charge mainstream digital devices on the market. 3. Smart and Safe Heating: The USB hand warmer built-in intelligent protection system to ensure product safety, anti-scalding, explosion-proof, non-radiation, green, and healthy heat transfer. 4. Portable and Compact: Ergonomic design, palm-sized design, easy to carry to any place, the portable pocket design is suitable for travel, sports, football, hunting, golf, fishing, hiking, camping, skiing, etc. 5. Thoughtful Gift: Stylish and warm gift is a must-have for you and your lover in the upcoming cold winter, it is an excellent birthday gift or holiday gift for children, friends, or family. Specification: Material: ABS Product Color: Yellow, Pink, Blue Product Size: 40 x 100mm Product Weight: 85g Package Included: 1 x Hand Warmer Power Bank