30/60-Minute Auto Timer & Memory Function This compact book light features an auto-off timer: 30 minutes in blue light mode and 60 minutes in green light mode. It automatically powers off if you fall asleep—ideal for children and frequent readers. The light remembers your last-used setting.3 Color Temperatures & 5 Adjustable Brightness Levels The light offers three color modes: amber (1600K), soft white (4200K), and natural white (6000K). Each mode has five brightness levels, allowing you to select the most comfortable setting for your eyes. The amber mode minimizes blue light exposure and reduces eye strain during nighttime reading, providing sufficient illumination without disturbing others nearby.Flexible Design for Full-Page Illumination The clip opens up to 210°, and the light head rotates left (90°), right (90°), and downward (45°). This flexibility accommodates books of all sizes and enables optimal positioning for even, comfortable lighting across both pages.USB Rechargeable & Long Battery Life Charges via standard USB—compatible with laptops, power banks, wall adapters, car chargers, and USB outlets. Built-in 500 mAh battery delivers up to 8 hours of runtime at maximum brightness and up to 80 hours at minimum brightness. Four LED battery indicators show remaining charge.Lightweight & Portable Ultra-lightweight design ensures minimal weight when clipped to a book. Stands upright on flat surfaces for versatile use. Folds compactly to fit easily in a shirt or pants pocket—perfect for travel, flights, and on-the-go reading.Dimensions: 105 × 36.5 × 15.5 mm Material: