Innovative Portable LED Light,Granvela Greeno Foldable USB Rechargable Book Light (Book-Shaped lamp), Art Deco and Surprising All-Season Gift (4 Colors to Choose)-Walnut 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.