2 in 1: Our electric hand warmer has a very practical function, two in one hand warmer and rechargeable, it can bring you warmth in cold weather and at the same time provide you with power supply when your phone is out of battery, very convenient, suitable for work, study or travel use. Small and portable: the electric hand warmer is small and light enough to hold in your hand without taking up too much space. The Electric Hand Warmer may be small, but it gives you the perfect amount of warmth to keep you warm in the cold winter months. Double sided heating. The hand warmer's power bank is designed for double-sided heating, with quick heating in 3 seconds, no long waiting time, 50 seconds to peak range and a long life. The double-sided heating design allows you to feel as if you are hugging a warm little sun, without fear of the cold. 3 speeds: The rechargeable hand warmer has three temperature settings, 40-60C, which can be adjusted to suit your needs. The different temperature gears give you more options. The high gear can quickly dispel the chill for you, the middle gear can effectively relieve your cold state and the low gear can keep you warm all the time. Lanyard design: The USB hand warmer has a lanyard design, which makes it easy to carry and use, or you can carry it directly in your pocket. The lanyard design not only makes it easier to the hand warmer on your clothes, but also prevents the hand warmer from being lost, and all the details of the product are controlled to give the user a better experience. Specification: Item Type: Electric Hand Warmer Material: PC Temperature Adjustment: 3 gears, First gear 40, second gear red and 50, third gear 60 Built in Battery Specifications: Lithium ion battery, 1500mAh Charging Time: 4-6 hours, do not exceed 6 hours How to Use: 1.Shortpressthesidebuttontoturnon,thehandwarmerbeginstoheatup,shortpresstoswitchgears,onegear,twogears,threegears,shortpressagaintoturnoff 2.Inthecaseofshutdown,theproductcanbeusedasarechargeablebatterytochargecellphonesorotherdevices Package List: 1 x Electric Hand Warmer 1 x Charging Cable Note: 1. Do not charge the hand warmer with the heating function on, and do not use the hand warmer to charge other devices 2. Insufficient power may lead to poor heating effect, it is recommended that the first full charge before use