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 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 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. Dual Functionality: Combines a powerful hand warmer and a portable power bank, offering both warmth and device charging, making it a must-have for cold days and emergencies. Fast Heating: Heats up in seconds with adjustable temperature settings, providing soothing warmth for your hands with a simple press of a button. Portable Power Bank: Equipped with a high-capacity rechargeable battery, it doubles as a power bank, capable of charging your phone, tablet, or other devices on the go. Compact and Lightweight: Sleek and easy to carry, this 2-in-1 device fits conveniently in your pocket or bag, making it ideal for travel, outdoor activities, or daily use. Safety and Efficiency: Features built-in safety protection, including overcharge, overheat, and short-circuit prevention, ensuring reliable and energy-efficient performance.