The Excitech hand warmer is a 3-in-1 rechargeable hand warmer that combines the functions of a mobile battery and a flashlight. It heats up quickly in about 3 seconds after turning on the power, generating 360° heat, so it instantly warms up your cold fingertips. 【3 Levels of Temperature Adjustment Function】 It can be switched between 55 degrees (high temperature), 50 degrees (medium temperature), and 45 degrees (low temperature) with a single button. After 15 minutes at 55 degrees, it automatically switches to 45 degrees setting for battery protection. If reheating is required, press the control button briefly and set it to 55 or 50 degrees. [Up to 17 hours of continuous use] Continuous use of one by one will last up to 17 hours of heat. [With mobile battery function] It is equipped with a large 10000mAh (5000mAh×2) battery. It can be used as both a hand warmer and a power bank, and it also has a built-in Type-C wire, so it is recommended for those who want to carry less luggage when carrying it. *You cannot use it as a hand warmer while charging the device. [Weight] Approx. 124g (*per bottle) [With LED flashlight function] This one can be used as a hand warmer, mobile battery, and flashlight, so it can also be used as a disaster prevention product in the event of a disaster or power outage. You can light up your surroundings while warming your hands when walking on the road at night in winter, fishing at night, camping, or other outdoor activities at night. In order to be used in an emergency, an anti-fall strap is included, and we are particular about safety and ease of use. [How to use] You can switch the temperature setting by pressing and holding the control button for about 3 seconds to turn it on and off, and then press the control button briefly. (Mobile battery) automatically turns on when connected to the device, and automatically turns off when disconnected. (Flashlight) Press the operation button twice to turn the LED on or off. [Charging time] about 3 hours (*when charging 1 unit). It comes with a branch cable that can charge two simultaneously in one USB port. *AC adapter is not included. [Japan Planning Support] If you have any questions or notices about the product, please feel free to contact our customer support for consultation. 【Contents】 Main unit, USB charging cord, 2 strap×s, drawstring, Japanese instruction manual (with warranty card) *This product does not come with an AC adapter. *When charging for the first time or if you have not used it for a long time, the charging time and usage time may differ significantly from the guideline, but it usually returns to normal after several recharging and use.