Features1SPLIT MAGNETIC DESIGN: Inspired by the stylish shapes of supercars, featuring an innovative split magnetic structure that is not only convenient to carry but also showcases personal style. Compact size fits ly in the palm of your hand. 23 LEVEL TEMPERATURE CONTROL: Equipped with 3 adjustable temperature settings (low/medium/high), easily switch between them to meet different occasions and personal preferences. 3LONG LASTING BATTERY: Utilizes imported heating elements for efficient and quick heating, allowing you to feel warmth in a short amount of time. Built in large capacity battery supports USB charging for prolonged use. 4SAFETY AND EXPLOSION PROOF: Built in intelligent chip controls temperature and circuit status automatically, effectively preventing overheating and short circuits to ensure safe usage. 5WIDE APPLICATION: Whether engaging in outdoor activities like golfing, fishing, camping, or in cold environments like skiing, these hand warmers are the ideal companions for keeping warm.SpecificationItem Type: HandWarmerMaterial: Aluminum Alloy + ABSBattery Type: Lithium ion Battery (with built in battery for delivery)Battery Capacity: 2500mAh x2Charging Method: Type CPackage List2 x Hand Warmer1 x Storage Bag1 x Charging Cable1 x User Manual