ITEM NAME:Metal Heating Pad Hand Warmer Heated Insole USB Heating Film Electric Heat Ma- Description: Typeï ¼Å¡heating pad Colorï ¼Å¡seen in the picture Sizeï ¼Å¡10.5cm x 7.5cm Weightï ¼Å¡36g Materialï ¼Å¡pvc & metal Voltageï ¼Å¡3.7V~5V The temperature is very good, can be adapted to mobile phone power supply, charging treasure Package includesï ¼Å¡1pc heating pad.Typeï ¼Å¡heating pad. Colorï ¼Å¡seen in the picture. Due to the difference between different monitors, the picture may not reflect the actual color of the item.