Glovii heated clothing is a unique solution allowing you to maintain thermal comfort even on the coldest days of the year.Glovii products stand out, thanks to the use of heated carbon fibers, which have a positive effect on blood circulation by emitting infrared waves.Glovii clothing was designed with sportspeople in mind, especially those practicing winter sports.It's also a perfect solution for bikers, construction workers, hunters, photographers and elderly persons.Features:The heating element is constructed from carbon fibres offering extraordinary reliability and durability as well as medical properties, thanks to infrared wavesA pocket for storing the battery offers you comfort of use every dayA large surface area of the heating element evenly distributes the heat, soothing and heating your bodySpecifications:Brand: GloviiBattery: any power bank with 2A USB output -not includedHeating element: 9W - carbon fiberHeating element placed on the chest and on the nape of the neckModes: 33% -LO/34°C/93°F, 66% -MED/39°C/102°F, 100%-HI/44°C/111°FWorking time: 10000mAh power bank - 4hFabric: 100% polyesterUniversal size for a neck circumference from 32 to 45 cmWeight without batteries: 120gProduct code: GA2MIncludes:neck warmer with USB inputNote: The set does not include power bank, you can use any power bank with 2A USB output. Glovii GA2M Heated Neck Warmer Powered By Any Power Bank