Come and see our amazing products. USB Disk shape lighter material is ABS. Easily charged with a common USB cable. Charged one time can be used 3 to 5 days. Heating filament hot smoke stop the wind blow out it. Have automatic protection function: 12 seconds auto power-off. Custom design and lower quantity are available. Complies with CE, ROHS. 3 1/4" L x 1 1/8 "Wx 1/2" Thick. Pls confirm with us about the packing info, stock status and exact production time before placing your orders.