Small and portable, double-sided heating, brand-new A-grade battery, creative new product in winter, two-in-one rechargeable hand warmer, can be used as a power bank mobile power supply, and can also be used as a hand warmer to warm your hands, so that your little hands can not be used in winter. Fear the cold again! 5 seconds to quickly heat up to warm your little hands, adjust the temperature in three gears, and choose from four colors! Support custom logo, pattern, the first choice for winter gifts! Source factory! Large quantity and excellent price!