4-in-1 hand warmer: The compact hand warmer has four functions and has a wide range of applications. It can be a hand warmer; it can be a portable mobile power supply; it can be a colorful lamp used to create a party or holiday atmosphere, or it can be a massager. Fast double-sided heating: Long press for 3 seconds, you can wake up the heating function of the hand warmer without waiting for a long time. Portable power bank: a small and lightweight built-in battery with a built-in capacity of up to 10000mah, which can be used as a portable rechargeable power source, allowing you to carry it with you for camping, hiking, mountain climbing and picnics to facilitate charging your mobile phone. It has two input interfaces (Type C and Android interface) and one USB output interface. Intelligent LED digital display: The LED display will clearly show you the current temperature and the remaining power in different temperature ranges. Adjustable temperature: Three temperature gears are provided for you to control and adjust, and you can adjust different temperatures according to your needs. 7 kinds: There are 7 kinds of breathing light around the color edge and round screen. Different colors will automatically cycle and flash, which is very suitable for use in parties and festivals. Input/output: 5V / 2A temperature: Low temperature: 40 degrees, constant temperature: 50 degrees, high temperature: 60 degrees usage time: Low temperature: 25 hours, constant temperature: 16 hours, high temperature: about 12 hours (this data is measured at an ambient temperature of 10000 mA at 25 degrees in an air-conditioned room) size:110x63x33mm Material:Aluminum alloy + ABS colour:red Package Contents: 2 x Hand warmer 2 x Chinese and English manual 2 x charging cable 2 x cloth bag