Innovative Portable Light,GranVela Foldable Book Light USB Rechargeable LED Night Light, Art Deco Magnetic Desk Lamp, with Four Colors-Black Superior durability: DuPont Tyvek provides excellent durability with ultra-lightweight material; the unique structure ensures water and tearing resistance. Lighting Color: GreenO can provide 4 colors to choose including warm white, red, green and blue. Long lighting time: 8 hours for white lights, colored lights for 24 hours. More Applications: suitable for indoors, outdoor and other occasions. According to your different needs, book lights can be opened from 0-360 degree and suspended. Cordless functionality: 5,400 mAh re-chargeable Lithium Polymer with an included USB Cable