About this item Quality material: the panel of the flat book light for reading in bed at night is made of organic glass rather than plastic material, stable and reliable, not easy to break, and the white handle is made of ABS, lightweight and sturdy; The product requires 3 AAA batteries that are not included in the package; Please note that the positive and negative poles of the battery do not be installed backwards. Easy to use: our flat screen night reading lamps are elegant styles, very easy to use, just place it on book and read, no other tools are required, ideal for nighttime reading; Brightness,without stray light escaping to bother anyone else. Maximize reduce eyestrain portable and lightweight design. Light adjustment: Product size is 6.8 x 5.7 inch.there is an adjustment switch on the side of the handle, scrolling towards the + direction to turn on the light and brighten the light, towards the - direction to turn off and adjust the brightness down, so you can adjust the brightness of the book reading lamp according to the actual situation. No harm to eyes: Offers wide area flood/ spread lighting instead of traditional book lights that outputs spot/ focus lights. The reading bookmark light emits soft white light, which can be adjusted the brightness to fit your own situation, without causing any burden on your eyes even when reading in the dark; The top of the light is installed with a light-blocking strip to control the light within the panel so that it will not spread out and affect other people. A variety of applications: the personal reading light will be placed flat on top of the pages of the book for easily reading; The flat bookmark light placed sideways can make the light illuminate a specific direction, and the brightness range is wider when placed vertically, which can be applied as a desk lamp, convenient for you to take notes; The night time reading light is also appropriate to be a bookmark when not in use, various functions to meet your different needs.