Portable Book Clip Lamp Dormitory Eye Protector Table Lamp Bedroom Night Lights 1. Light source power: 0.5W 2. Three-stage adjustable color temperature: 4500K - 3000K - 5500K 3. 2 LEDs, maximum brightness: 50 lumens for charging model30 lumens for battery model 4. Power supply: charging model-500mAh lithium battery, battery model-AAA x 2 (batteries not included in the package) 5. Working duration: about 5-60 hours for charging modelabout 28-120 hours for battery model (varies with different brightness) 6. Charging model: charging time is about 120 minutes; the red LED indicator is on during charging, and the LED indicator automatically turns off after full charge Instructions for use: 1. It has a dual memory function of light brightnesslight color, and the default is the brightnesslight color used last time, after lighting for 30 seconds, press the power switch to quickly shut down 2. Press the power switch to turn on the light; the default color is 4500K warm white light; then quickly press the power switch to cycle through the light colors: 3000K warm yellow light - 5500K white light, turn off the light 3. The light can be switched to three color temperatures, and the brightness can be infinitely dimmed; when any light color is on, long press the power switch to dim; when adjusted to the brightest or darkest, it will flash 3 times to remind you