Product Description Material: ABS Capacity: battery capacity: 1000Mah Size: 30.6x8.2x4.2cm Number of LEDs: 5 Product power: 1W Package content: 1 * LED reading clip 1. 【5 LED Light】Book light can block out blue light. 99.95%. Blocking helps melanopsin receptors in the retina to signal to the brain that it is time to secrete melatonin in anticipation of sleep. 5 LED lights provide stable and comfortable light, protecting your eyes from injury and radiation. The Clip LED reading light is very suitable for bed, night and reduces eye strain. 2. 【Soft Flexible Neck】 360° and non-slip gripper】 The neck which can be adjusted to any angle can position and focus the light on where it needs to be. The gooseneck is flexible enough to soften it up. any angle you desire, providing you with omnidirectional lighting at any angle. 360°. Adjustable clamp with rubber cushion protects pages from damage, provides secure and stable clamping, and helps to obtain the optimum lighting range. 3. 【Power