... with warmth d. quality & quantity sured Heat glovesFeature of heat gloves: materials choosing, safety & reliability, energy saving, easy usage.1. Materials ... .While it costs less than 5 W power(200 hours for usage just cost 1 KW), but it brings far more ... heat than any other similar products.4. Easy using: design for optional charging, USB or power adapter at home , li-batterysupply ...