Kayannuo Back to school Clearance Multifunction Hand Warmer USB Wristband New Smart Temperature Control Hand Warmer Heating Quickly Home Essentials () Multifunction Hand Warmer USB Wristband New Smart Temperature Control Hand Warmer Heating Quickly Features: Built-in new thermostat for fast heatingConstant 40'C heat packs to further fatigue Soft synthetic thermostatic heating pads , soft wrap-around fitHeat seeps in and feels as soft as a feather No need to hold it in your hand Keeps you warm at work,Upgraded Thermostat Chip No Need To Wait For Warmth 360° surround heat black technology Warms your hands,4-position key adjustmentVisualization of temperature 【PERFECT GIFT FOR WINTER】 Hand warmers to surprise your parents, kids,, family, girlfriend and anyone you cared about. With a for Christmas, Birthday, Thanks Giving Day, Valentine’s Day and such important festival. This high-tech warmer gift not can make her/his heart warm, but also her/his hands. 【Portable 】Handy carrying anywhere with any pocket or bag while sporting, fishing, hiking, camping, skiing, travel or play . Also a perfect reusable hand warmer solution in cold weather for a or office worker. Product Description: Pseudolaric : Smart Hand Warmer Product Power : 5 W Temperature Regulation : 4-speed Operating : key Product Input : DC5V / 1A Battery Capacity : 2000 mah : Up To 300min Product Material : High temperature + plastic charging Time : 3 Hours Color : Orange / Purple / / Black / White Package Include: 1x hand warmer Note: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays. Features: Built-in new thermostat for fast heatingConstant 40'C heat packs to further fatigue Soft synthetic thermostatic heating pads , soft wrap-around fitHeat seeps in and feels as soft as a feather No need to hold it in your hand Keeps you warm at work,Upgraded Thermostat Chip No Need To Wait For Warmth 360° surround heat black technology Warms your hands,4-position key adjustmentVisualization of temperature