Features1SPLIT MAGNETIC: Adopting innovative split magnetic structure, it can be freely combined or used individually, which is both convenient and fashionable. Built in strong magnet to ensure stable adsorption. 2INSTANT HEAT: Adopting graphene super conducting heating film technology, it starts heating instantly when it is turned on, no need to wait. It instantly brings warm experience and saves cold hands in winter. 33 LEVELS SMART TEMPERATURE CONTROL: Equipped with an intelligent temperature control chip, it provides 3 speed temperature adjustment to accurately maintain the ideal temperature (up to 55DegreeC), automatic constant temperature to keep warm, and avoid overheating, so you can use it with peace of mind. 4OVERALL HEATING: This hand warmer can dissipate heat evenly throughout the body, wrapping every inch of skin with warmth and realizing all around constant temperature warming. 5COMFORTABLE HAND FEELING: Adopting special avocado appearance design, it can ly fit the curvature of the palm, combined with nano aluminum alloy and composite heating fiber, not only warms up quickly, but also feels comfortable in the hand, and does not get tired of holding for a long time.SpecificationItem Type: Electric Hand Warmer Material: ABS, PC, Aluminum AlloyBattery Type: Li Battery (Built In)Battery Capacity: 2500mAhCharging Method: Type C PortPackage List1 x Electric Hand Warmer1 x Charging Cable1 x Instruction Manual