Features1360 Degree Surrounding Warmth: The innovative double sided heating technology ensures all around warmth, enveloping both hands for a cozy experience even in the coldest winter. 2Intelligent Temperature Control: Equipped with an intuitive LED display and 4 adjustable temperature levels, this hand warmer offers easy and safe operating, with built in temperature limit and explosion proof system. 3PI Film Heating: The self developed PI film heating technology allows for efficient and uniform heat transfer, maintaining ideal temperatures for long lasting and comfortable warmth. 4Longer Lasting Warmth: Hand warmer is equipped with 4000mAh rechargeable battery, which ensures long lasting warmth. Say goodbye to the chills of winter. Great for chilly commutes, outdoor strolls, or staying cozy in a cold office, it is your daily companion for comfort and warmth. 5Effortless Elegance: With a unique down jacket inspired appearance, this hand warmer not only looks stylish and trendy, but also provides fast warmth, making it a must have accessory for the winter.SpecificationItem Type: Rechargeable Hand WarmerMaterial: ABS, PC, Aluminum Alloy Battery: Lithium Ion Battery 4000mAh (Built in) Charging Method: Type C InterfacePackage List1 x Rechargeable Hand Warmer1 x Charging Cable1 x User Manual1 x Hanging Rope