The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! Smart Hand Warmer USB Charging Instant Heating Mini Portable Hot Long Life Heater Features: It can be a hand warmer to keep you warm in the cold winter; it can be a to relieve the pain caused by fatigue. One side fast heating: Long press for 3 seconds to wake up the hand warmer heating function, no need to wait for a long time. Heating power is 5-10w, more heat will warm you on cooler days. Safe material design, easy to store, does not take up space. ADJUSTABLE TEMPERATURE: There are three temperatures for you to control and adjust, the first is 40 degree Celsius low temperature, the second is 55 degree Celsius constant temperature. The third is 60 degrees Celsius. Built-in high-capacity battery, small size, light weight, easy to carry. Product Description: Product name: Hand warmer Color：Pinks,White,Yellow Heating temperature: 40℃~60℃ Material: ABS, aluminum alloy Viflosae Smart Hand Warmer USB Charging Instant Heating Mini Portable Hot Long Life Heater Electronics Gadgets Deals of the Day Clearance It can be a hand warmer to keep you warm in the cold winter; it can be a to relieve the pain caused by fatigue. One side fast heating: Long press for 3 seconds to wake up the hand warmer heating function, no need to wait for a long time. Heating power is 5-10w, more heat will warm you on cooler days. Safe material design, easy to store, does not take up space. ADJUSTABLE TEMPERATURE: There are three temperatures for you to control and adjust, the first is 40 degree Celsius low temperature, the second is 55 degree Celsius constant temperature. The third is 60 degrees Celsius.