The PG-10 PageGlow from Carson Optical is a compact, portable, ultra-bright LED Book-light. The PageGlow dimensions are 7.25" x 5.375" x .875". The PageGlow Book-light includes an ergonomic Thumb Groove and detachable Page Clip to allow for easy placement on reading material. It includes 3 Super-Bright LED Lights that spread evenly across the page without disturbing others. The PageGlow also includes a 3 Stage Dimming Switch for desired brightness. Runs on 3 AAA batteries (not included). At Carson, we strive to make sure our customers are 100% satisfied with the quality of our products. We are so confident in our products that we back them with a Limited Lifetime Warranty! Carson will repair or replace your Carson item if it is found to have manufacturing defects in materials or workmanship. Please contact Carson for additional warranty details.