2 Colour * 3 BrightnessThis reading light has 3 light colours and each colour has 2 brightness levels which try the best to offer the brightness you want. Equipped with upgraded LED besds , you can easily switch it by single touch or long press touchEye protection The circular lamp head book light simulates the natural light diffuse reflection, reduce multiple shadows, clear view, no flash, no glare, it won't make eyes fatigued even staying in the light for a long time Sturdy Clip & 360Flexible Neck]Extra Strong Clip Grips Almost Anything or Use it Standing.Perfectly clip on music stands, tables, computer desks,etc. The flexible neck allows you to bend and twists to any angles you like High Capacity & USB RechargeableThe reading lamp built-in 2500mAh USB rechargeable clip lamp, longer battery life than others. USB charging allow you to take it to anywhere, can charge by power bank, computer, laptop