Item Type: Electronic Hand Warmer Material: ABS, Aluminum Alloy Size: Approx. 7 x 10.3cm/2.8 x 4.1in Battery Type: Lithium Polymer Battery (Included) Battery Model: 18650 Battery Capacity: 6000mAh Charging Time: 4-5 Hours Power: 7-10W Heating Temperature: 40 for the First Gear, 50 for the Second Gear, 60 for the Third Gear (Plus or Minus 3%)1Adjustable Temperature: Hand warmer has 2 adjustable temperature, low temperature and high temperature, you can do whatever you want to warm winter. 2LCD Display: Electronic hand warmer adopts LCD display and smart sensor, clear temperature and remaining power, visual temperature, easy to charge in time. 3Power Bank Function: Mobile phone energy supply station, up to 2A charging and discharging current, fast charging and discharging, making your life more convenient. 4Comfortable Hand Feel: The paint of the rechargeable hand warmer is comfortable to the touch, and the surface coating is delicately treated to fit the curve of the palm. 5Portable Design: The USB hand warmer is compact, easy to carry, and portable when you go out. Intimate lanyard design, anti drop. 1 x&nbspElectronic&nbspHand Warmer 1 x USB Cable 1 x Instruction Manual 1 x Carrying Strap 1 x Storage Bag