This pair of hand warmers are joined together by strong magnets, but they can also be easily separated when necessary. You can combine them into a palm-sized hand warmer, or put them separately in your pockets, holding one in each hand and sharing one hand warmer with your family. The hand warmer has two units to ensure your hands remain comfortable during outdoor activities, especially for those with Raynaud's syndrome. These rechargeable hand warmers can also serve as power banks, allowing you to charge your mobile phones and other electronic devices during your travels! Experience our electric hand warmer, which is rechargeable and features a liquid screen temperature display. It has 3 adjustable temperatures and dual heating (104°F/122°F/140°F). Whether you are on a cold outdoor adventure or need a little extra warmth during daily activities, our electric hand warmer is your perfect companion, providing you with a customized heating experience at your fingertips Use a reusable hand warmer to heat up quickly. Charge the hand warmer for 3 to 4 hours. It heats up quickly in 5 seconds and can be used for 12 hours. Unparalleled warmth! In critical moments, it can also transform into your power bank to charge your electronic devices. This rechargeable hand warmer is made of aerospace-grade aluminum and features an ergonomic design. It weighs 108g, which is only half the weight of a mobile phone. Our battery hand warmer effectively warms your hands in cold weather due to its excellent thermal conductivity Rechargeable hand warmers are here to get through this cold winter, whether you enjoy hunting, playing golf, fishing, hiking, camping, skiing, or dealing with Raynaud's disease, arthritis or frostbite. These usb charging hand warmers are perfect pocket-sized companions and thoughtful Christmas gifts for family and friends, ensuring comfort in cold weather Size: 10.8*4.5*7.5cm Color: White, green, black Package: 2 hand warmers, 1 usb charging cable, 1 instruction manual