USB-C Rechargeable & Long Lasting USB-C rechargeable, faster, safer and more convenient 15 hours of reading time available in the strongest setting 90 hours of reading time in the lowest setting 4 battery power indicator can tell how much power left at any time Anti-Slip Pad & Wider Clamp Anti-slippery pads protect your books from being scratched or pinched. The anti-slip pad prevents from sliding, and holds more firmly The max width is 1.4 in, so you can nearly clip it on any books you want firmly It can also stand on your table or desk 360° Flexible & Super Lightweight 360 degrees flexible gooseneck Adjustable to point to the area you want 1.9OZ ONLY. Much lighter than 1 eggs Mini sized & portable and you can put in pocket, suit for travel 3 Color Modes & 3 Brightness Meet You All Needs Featuring with 3 color modes and 3 brightness levels. USB-C rechargeable, 800 mAh battery provides up to 90 Hrs reading time in the lowest setting. 4 battery power indicator, so you can tell how much power left at any time.This book light clip on is only 1.9 oz. Specifications Battery Capacity: 800mAh Material: ABS+PC+Metal Weight: 1.9oz Charging Port: USB-C Rechargeable CRI: ≥90 Battery Life: 15-90 Hours Color Temperature: 1600K,4200K,6000K Package Contents 1* Book Light 1* USB-C Cord 1* User Manual