A sleek and compact hand warmer that produces massive heat when the built-in magnets (MagTwins) are connected. Detach them to have two stylish hand warmers, ideal for sharing with loved ones or carrying in your pockets, one in each hand. The UT2s also functions as two 5000mAh power banks.Ocoopa UT2s - Rechargeable Hand Warmer Features: Dual Warmth Options: MagTwins rechargeable USB hand warmers offer split magnetic design. With a 270° setting for heating and 90° for magnetic absorption, they can combine for 360° heating all day long. Double Battery Power: Each MagTwins piece features a 5000mAh rechargeable battery, delivering over 8 hours of heat on low or charging your phone 1.5+ times. Rapid Heating: MagTwins provide quick 3-second heat release with a single button. With a 20% power density increase, it offers efficient, even heat distribution. Versatile Heat: Choose from 4 temperature levels up to 136°F. MagTwins remembers your last chosen heat level, simplifying your operation for next time.