<br><b>Product Specification:</b> <br>⚫ The light can be switched three color temperature <br>⚫ Brightness step-less dimming <br>⚫ MAX Brightness: 50 lumen <br>⚫ Three color temperature adjustable: 3000K-5500K-4500K <br>⚫ Power supply: 250mAh lithium battery(include) <br>⚫ Charging time: 40Min <br>⚫ Lasting time: 4hours once fully charged <br>⚫ Red LED light is on When Charging, and the Red light auto-off when fully charged <br> <br><b>How to use:</b> <br>√ Has the memory function of light brightness, the default is the brightness used last time. <br>√ Press the power switch to turn on the light, the light by default is 3000K color warm yellow light, and then quickly press the power switch to switch the light color: 5500K white light--4500K warm white--turning off the light. <br>√ When any lamp color is bright, long press power switch to adjust the brightness from the current brightness to 100%, and loosen and then long-press the power switch to adjust the brightness from 100% to 15%. <br>√ Users can adjust the brightness according to their own needs. <br> <br><b>Holder use guide:</b> <br> Step 1: Pry up the plastic sheet under the compressed spring <br>Step 2: Insert the light fixture <br>Step 3: Can stretch the adjusting bracket back and forth <br> <br><b>Package Include: </b> <br>1 × USB Rechargeable Bookmarks Light