... 55ºC-70ºCHandy Warmer,it has a light surface,catch only by one hand,good quality and treatment ... and health.also be sent Elders.This handy warmer can be work to keep warm 20-24 ... weather being cold.Medical treatment: cure women dysmenorrheal,hand&feet cold, arthrosis,etc.Product characteristic:good quality ... when you added oil.Put handy warmer into clothbag when use over. sell no.006 steel hand warmer