● Plastic housing
● USB Hand Warmer is very effective at warming your hands in cold days.
● With LED showing power situation
● Smart Temperature Control automatically adjusts the heat depending on 
     the ambient temperature adjusts the heat which is sensed by air sensor.
● Dual temperature control 40℃-48℃ deliver superior warming performance
   and can be used freely with one button.  
● Power： 2 * AA  battery