... coatMaterial: stainless ironAccessories: oil cup,user guide,black bag,package box.Add oil quantity: pls reference oil cup ... 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 ... soon when you added oil.Put handy warmer into clothbag when use over. sell no.006 steel hand warmer