Features: 1. Hand warmer & Powerbank combo. It's not only a little hand warmer but also an emergency back-up battery. With a large digital display, you can check the remaining power for immediate charging. 2. Double-sided and 3 levels of temperature heating warms your both hands. Easy to use with only ONE button. Fast heating up in a few seconds. 3. Rechargeable hand warmer with pocket-size and skin-friendly material finish, easily held with one hand. Shockproof, anti-scalding, radiation-free. 4.Quality ABS + alloy materials made, which features light weight and long durability. It is a nice size to hold and feels smooth in your hands. 5. Handy carrying anywhere with any pocket or bag while sporting, fishing, hiking, camping, skiing, travel or play sports outdoors. Also a perfect reusable hand warmer option in cold weather for office worker. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material:ABS + alloy Size: As the picture shown Color/Style: As the picture shown Battery: 18650*2 Output: 5V1A Input: 5V1A Power supply mode: USB Rated voltage: 3.7(V) Rated power: 5 (W) includes: 1 x Hand Warmer 1 x Charging Cable (phone not included)