Cat Hand Warmer Hand Warmer Electrothermal Film Portable Usb Power Charging Device Mini Warm for Kids with Cake Pattern Features:Warm Hands mode: double click on warm hands function, double click again to close warm hands function; Click on the adjustment gears, you can choose between low temperature and high temperature grades; Mobile Power Mode: When the manual warming mode is not enabled, the mew paw can be converted into mobile power to charge your mobile device with the conversion tip. Specification: Size: 75.3*74.1*31.4mm Product Material: ABS, Aluminum Alloy, Silica Gel. Preheating temperature: low temperature 45 degrees, high temperature 55 degrees. Battery capacity: 3.7V/3000MAHMheating capacity: 5WMoutput capacity: 5V/1aCharging time: 2.5 hours. Interface Type: USB Customized Colors: Pink Package Included:1 x Hand Warmer Heater Notes:1. Do not use for bodywork, so as not to damage the car paint.2.2. Due to manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!