The Smart Book Light Mini has a serious WOW factor! Made of gray linen fabric, this portable and rechargeable light magically illuminates when the book is opened. The interior is made of water-resistant and tear-proof Tyvek paper. 300 lumens / 3 watts. Battery life: 6-8 hours in constant use; Charging time: 4 - 5 hours. Can be opened up to 360 degrees. Magnetic covers so it can be attached to any metal object on the wall, etc. 4.8" x 3.5" x 1"