Carson LumiFlex LED Reading Lights for Books, Magazines, Kindles, Nook, Tablets, E-Readers, Crafts and Hobbies 2 Ultra Bright LED Lights | Built-In Storage Clip Fully Adjustable Lamp Head | Compact and Portable Perfect for reading books, magazines, tablets, kindles, e-readers, etc. Uses 2 CR2032 Button Cell Batteries (Included) Backed By Carson's Limited Lifetime Warranty