Flexible reading light with rubber coating Suitable for night reading, ideal for use in planes, trains and cars, as well as in the home or in other cases where good readability is required. Built-in 250mA Li-Po battery, no extra cables needed. Simply plug it into the power bank, smartphone charger or computer to charge the device. Whether as a bedside lamp, on the desk in the office, as a table lamp on the table, in the car, in the cupboard, on the shelf or on the desk with the portable mini clip lamp, the choice is yours. Product specifications: The light can be switched to three color temperatures, and the brightness can be continuously adjusted. Book light size 20.5*4*0.9cm Maximum brightness: 50 lumens; Weight: 45g Color temperature adjustable in three steps: 3000K - 5500K - 4500K; Power supply: new 250MAH ternary polymer lithium battery; Duration: about 4 hours, charging time: about 40 minutes; The red LED indicator lights up when charging and automatically turns off when fully charged. Instructions: With the brightness memory function of turning on the light, the default is the last brightness used; Press the power switch to turn on the light, the default color is warm yellow 3000K, then quickly press the power switch to cycle the light color: white light 5500K -- warm white 4500K -- turn off the light; When a light is on, long press the power switch to adjust the brightness of the current brightness to 100%, release the switch d power, then long press the power switch, the brightness of the light will be adjusted from 100% to 15%; Users can adjust the brightness according to their needs. Quantity delivered: 1 piece