1. Rechargeable Hand Warmer: Pocket cute pet astronaut hand warmer, small and delicate, can be with one hand, and can be carried in a travel bag or pocket. Great for outdoor, travel, work, hunting, sports, fishing, hiking, skiing, camping, biking 2. Ambient Light Function: This heated hand warmer not only brings you warmth in the cold winter, but also acts as an ambient light when the switch is turned on in the dark night. 3. Quick Preheating: It only takes 5 seconds to preheat, and the heating temperature can be changed every time the switch is pressed; the temperature adjustment in three gears, the is 35C, the second gear is 45C, and the third gear is 55C. The usable time is about 90-180 minutes. 4. Lanyard Design: The portable silicone lanyard design is very convenient to carry and store. 5. Winter perfect Gift: This is a must-have to get through cold , especially for the hyperthermia needs of those with Raynaud's arthritis. Hand warmers are a great gift for Thanksgiving, Christmas, New Years, Birthdays and Anniversary gifts for loved ones, kids, family and friends, and perfect for outdoor enthusiasts. . Power: 50W & Under Heat Preservation Duration: 6 Hours & Under Power supply: USB Battery capacity: 3600mAh Rated voltage: 5V Rated power: 3W Charging time: 3-4h Battery life: 90-180 minutes Colour:blue Material:ABS+Aluminum alloy Package Contents: 1 x Hand Warmer 1 x Usb Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.