[9 LEDS & 3 COLOR TEMPERATURE]:This reading light equipped with 9 upgraded leds which life span is more than 50,000 hours to diver more uniform luminance than normal leds. The reading light has 3 color temperatures(3000k to 6500k), which can meet all your needs. You can choose your favorite comfortable setting according to your demands, such as reading, working, studying, sewing, camping, or sleeping etc. [Eye Protection] - This reading light has a flicker-free, anti-blue light, eye protection light source so you 't get tired or affect your rhythm even after long hours of reading. [360° Adjustable] - This book light with 360° gooseneck tube allows you to adjust it to any angle you want. And you don't have to worry about disturbing your kids/partner at night, it creates a perfect private space for reading in bed. [ NON SLIP CLAMP STAND] The bottom of the clip is equipped with a non-slip mat, which can effectively the light stays firm wherever. The reading light is only 2.1 oz super , easily fits in your bag or purse, it is a perfect companion for traveling or camping. [Rechargeable Book Light] - Built-in 500mAh rechargeable battery can supply power continuously for 10 hours reading at low brightness. It can be powered by USB charger, laptop, mobile power, car USB, etc. (cable included). MINI size and design clip-on reading light is a great gift for kids camping and travel, easy to carry and makes your trip hassle-free. color:Black Material:plastic Package Contents: 4 x Book Light 4 x USB charging cable 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.