1、1. Hand Warmer: You can put this hand warmer in your pocket, hold it in your palm, and travel easily. 2、2. Material: high-grade non-slip aluminum and ABS material, double-sided heating, smooth hand feeling when using. 3、3. 3 Gear Temperature Adjustable: Multi gear temperature control function, 8 seconds heating, according to the first gear temperature of 35-40 ° C, according to the second gear temperature of 45-50 ° C, according to the third gear temperature of 55-60 ° C. 4、4. Convenient Design: Intimate hanging rope design, convenient hanging rope and anti-skid falling, so that you don't have to worry about being busy and forgetting. 5、5. Fast Charging: Charging is convenient and fast. You can use power bank, notebook, etc. to charge the product. It is forbidden to use it during charging to avoid scalding. Size: about 8*2.5*6.5cm Battery capacity: 1200 mA Net weight: about 115g Charging current: 5V/1A Working current: 0.4-0.9A Rated power: 5-10W Hand warmer temperature: First gear: 35-40°C (press once) ±5°C Second gear: 40-50°C (press twice) ±5°C Third gear: 55-60℃ (press three times) ±5℃ 1 x Hand Warme