Mini Cute Pet Warming Hand Warmer - Student's Portable USB Winter Hand Warmer Product name: Cute rabbit hand warmer Product size: 65X45X112MM Input power: 5V/1A5W Working power: 3.7V/1A3.7 Hand warmer temperature: low temperature ~50 degrees High temperature range ~55 degrees execution standard: GB4706.99-2009 Instructions for use 1. Disable all functions while charging 2. Charging: 5V/1A red light when charging, blue light when full. 3. Hand warmer: Press and hold the button for 2 seconds to turn on and off, click to change gears. The first setting temperature is 50 degrees, and the second setting temperature is 55 degrees. The indicator light: turn on the first stage and the green light will turn on, and turn on the second stage and the colored light will change. 4. The hand warmer is set to automatically shut down after 60 minutes. Precautions When charging, be sure to place it in a heat-dissipating and high-temperature-resistant place. Let the hand warmer cool down before storing it in the box. In order to extend the battery life, this product warms up when the battery level is lower than 5%. The mobile phone cannot be opened If it is not used for a long time, it can ensure sufficient power so that it can be used at any time. Check your hand warmers frequently for signs of wear or damage. Do not use them if they show signs of wear or damage. Not allowed to be used by people who cannot take care of themselves, infants or people who are not sensitive to heat use. Do not use when charging.