Description:1. Comprehensive heating: metal scrub feeling, 360 heating, built-in high-quality heating elements, quickly heated on the inside, quickly heated, quickly warming hands.2. Fast heating and 2 temperature settings: press the button to release the heat immediately. The hand warmer heats up quickly in a few seconds. Give 2 temperature levels 45 C/60 C.3. Security Upgrade: Optimize and upgrade circuits, provide overlap, overload, overheat, short circuit protection to ensure long service life.4. Exquisite and convenient: small and portable, so you can place it wherever you want, in your hands or in your pocket.5. USB charging: USB charging portable, charging anytime, anywhere.Specifications: Product Name: Hand Warmer Battery Capacity: 2000 mAh Input current: 5V/2A Power: 5W Lifespan: > 500 times Charging time: about 2 hours Product size: 30mm*100mm Product weight: 85 gramsTemperature control: low temperature 45 C-high temperature 60 The package includes: 1 x Hand warmer 1 x USB cable Notes: 1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color shown in the pictures. Thank you! 2. Please allow 0.1-2cm measuring deviation due to manual measurement.