Kayannuo Clearance Valentine's Day Gifts for Women Smart Hand Warmer USB Charging Instant Heating Mini Portable Hot Long Life Heater Smart Hand Warmer USB Charging Instant Heating Mini Portable Hot Long Life Heater Features: Smart glowing hand warmer to keep you warm in the cold winter months 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 level is 40 degree Celsius low temperature, the second level 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 Size:3.85*2.4*1.22in Weight:0.33lb Includes: 1x hand warmer 1x data cable Smart Hand Warmer USB Charging Instant Heating Mini Portable Hot Long Life Heater Features: Smart glowing hand warmer to keep you warm in the cold winter months 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.