Item Type: Electric Heated Ear Warmer Material: Plastic Product Specification: 1pc Product Use: Household Battery Capacity: 1000mah Battery Life: 360-720 Minutes (55-45) Battery Type: Polymer (shipped with Built in Battery) Battery Model: 102050 Battery Capacity: 1000mah Scope of Application: Most Scenarios Package List 1 x Electric Heated Ear Warmer 1 x USB Cable 1Three Level Temperature Control: Conductive hot compress, built in heating component and graphene sheet, three level temperature control. 2Fast Heating: Three second quick heating, no need to wait for warmth, constant temperature heating, giving a warm and comfortable experience. 3Rotating Shaft Design: Two rotating shaft design, can adjust the left and right ear wearing according to different ear types. 4Comfortable To Wear: The heating body fits the ear, fits tightly, automatically fits, and is more comfortable to wear. 5Applicable Scene: Wide range of applications, can be used in winter, outdoor activities, cycling, skating, etc.