1.Enhanced Heating Speed: the need for pouring water and reduce the risk of with constant temperature control. Our graphene hand warmer ensures instant warmth in just a few seconds, thanks to its design 2.USB Charging Solution: the limitations of fixed power supply with this graphene hand warmer that can also be connected to a mobile power supply. Equipped with a USB interface, it lets you travel with ease and provides warmth anytime, anywhere 3.Comfortable and Soft: Thanks to its state-of-the-art heating technology and long-lasting performance, this graphene hand warmer is designed to provide you with quick warmth in chilly temperatures 4.Smart Heat Control: Enjoy warmth without high-temperature thanks to our double-sided heating technology and intelligent temperature control with 3 adjustable modes 5.Practical Present: Give the practical and sleek graphene hand warmer as a present to your loved people this winter, spreading warmth and care with every use. This thoughtful present is a perfect way to show how much you care This handy device only takes a few seconds to provide instant heat and can be directly plugged in. The double-sided heating method quickly warms you up and makes for a practical and thoughtful present. Say goodbye to cold hands and hello to warmth with our Graphene Hand Warmer. Product Name: graphene hand warmer Product size: about 24.5x16x11cm/9.65x6.3x4.33 inches Product weight: 126 g Product power: 220W Product power supply method: USB plug-in for use Color: White Material: Flannel Package Contents: 1 x graphene hand warmer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.