1. Choose from warm, cool warm, and cool light modes to suit a variety of reading and working conditions. Each mode has 10 brightness levels to precisely adjust the lighting to match your environment and mood. 2. This reading light is equipped with soft, warm 3000K light to minimize flicker and glare, providing optimal protection for your eyes and reducing fatigue during long reading sessions. 3. The sturdy clip can be securely attached to headboards, desks, and more, making it ideal for centralized lighting in beds, study areas, or dorm rooms without disturbing others. 4. This , portable book light includes a 59-inch USB cord that is compatible with laptops, power , and USB adapters, making it convenient to use it anywhere. 5. Compared to traditional incandescent lamps at the same brightness level, this lamp consumes 20% less energy, which not only reduces your electricity bills but also reduces your carbon footprint. Color rendering index: 80-89 Switch mode: button type Voltage: 36V Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:PC Package Contents: 1 x Eye protection reading light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.