Large Capacity - Super Long Battery Life The hand warmer has a built-in 10000mAh battery, equipped with new energy high-density cells, which is efficient and energy-saving, providing up to 15 hours of battery life to keep you warm all day long. 2-in-1 - Hand warmer and power bank Hand warmer and power bank, the electric hand warmer has a built-in charging cable, no need to bring another one, supports fast charging, 5V/2A, USB The hand warmer is designed with 3 interfaces, USB , Type-C and Lightning, and equipped with an OTG adapter, compatible with a variety of devices, and can be charged anytime and anywhere. Reusable USB Hand Warmer Unlike other rechargeable hand warmers, the golf hand warmer adopts a dual-screen digital display design that displays temperature and battery at the same time, and the one-touch operation is intuitive and easy to use. Portable Hand Warmer In order to make the Linkecn hand warmer more portable, it is compact in size and embedded with a silicone handle, making it easy to carry without falling. Just put the charging hand warmer in your pocket and play golf or hike. A beautiful ideal. Winter gift 10000mah hand warmer, beautifully packaged and includes a velvet storage bag. The multifunctional desk hand warmer can not only be used for golfing and hiking, but can also effectively relieve pain. It is the warmest gift this winter.