FeelSky EVHOT Electric Heated Blanket Gentle on the skin with fleece backing An electric heated blanket excellent for warmth and preventing dryness. Using it over your lap prevents lower body chill. It uses warm materials and colors perfect for the cold season. With a built-in battery, it's great for outdoor sports viewing and outdoor activities in winter. [Features] ・Warmth ・Fleece backing ・Temperature adjustment function (3 levels) ・With pocket [Battery] ・Rechargeable lithium-ion battery ・Output: DC5V x 1A or more ・Connection terminal: USB specification (Approximate continuous usage time) ・When using one 2500mA lithium-ion battery High/approx. 1.5 hours Medium/approx. 2.5 hours Low/approx. 3.0 hours [Material] Surface: Cationic T-shirt T100 Back: Flannel T100 [Size] (cm) Length 26 x Width 30 x Height 10 I haven't used it much. Please consider it.