1.Eye-protection Supplementary Soft Light High color rendering index/ Low color temperature. The low color temperature light curtain can dilute the blue light emitted by the phone effectively to alleviate visual fatigue. 2.One-click To Open Eye Protection Mode Simple touch design, easy to use, the to turn on the front lights, the second click to turn on the front and rear lights at the same time, the third click to turn off (cycle in turn), and long to adjust the brightness. 3.Tightly Fit The Back Cover With Tight Stitching Double-sided magnetic suction + non-slip pad, which can fit the mobile phone tightly, and it is not easy for the eye protection lamp to shift when holding the mobile phone. It is more worry-free to use and more immersive experience. 4.90 Foldable Design Convenient Storage Can be folded at 90, which is convenient for storage. Made of environmentally friendly ABS+aluminum alloy.The body lighter in weight. 5.Power Saving Long Battery Life Built-in (200mAh) lithium battery, the battery life is 3-40 hours, and the time varies according to the brightness and darkness and the opening of the front and rear lights. Product name:Phone night reading eye-protection lamp Rated power:1W Battery capacity:200mAh Battery life:3-40 hours Light source type:LED light source Color temperature:2900K Colour:Black Material:ABS+aluminum alloy Package Contents: 2 x Charging cable 1 x Magnetic ring 1 x English instruction manual 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.