Stepless brightness and 3 color temperatures:Super reading lamp with three dimmable color temperatures such as 3000 K,5500 K,4500 K.with memory function to preserve the last practical setting.The lamp provides sufficient brightness and a pleasant light that will not make your eyes tired even when reading for a long period of time. Multifunctional two clamps:Two clamps for the fixing lamp according to individual preferences,a clamp thickness for e-readers,for Kindle etc.and a thin clamp for paper books.The clamp is magnetic so you can connect it to any iron product. Easy for carry:This lamp is very compact and light,so you can carry it anywhere with you and easily attach it to books or magazines.The clip and the lamp can be divided into two parts so that the reading lamp can be used as a bookmark. Adjustable Orientation:The flexible silicone base can be twisted and bent up to 360 degrees,which stays in place perfectly after bending for maximum illumination. Charging without cable:250 MAH ternary lithium polymer battery.The charging cable is cleverly incorporated into the"bookmark"itself.Battery life and charging speed are great.A built-in energy management IC prevents overloading and over-discharge.The lamp can also be charged via laptop or other USB devices. Item Type:Book  Lamps Wattage:normal Light source:Halogen lamp Energy source:CA Battery type:NONE Model Number:book light Batteries included:No Lamp type:LED Energy efficiency class:A+ Color:black+silver Material:ABS Package Contents: 1* reading light