Specifications: Material: ABS+PMMA+Metal Rated Voltage: 3.7V/18650/1200/mAh Rated Power: 3W Luminance: 350lm Weight: 330g Color Temperature: 11000K-13000K Charging time: 2-3hours Dimensions: 3.9 x4.3 x16.1inch Product features: 1.sunflower pen containerdesk lamp,you can adjust the angle you like. 2.Ultra luminosity adjustment,get the light for yourself. 3.Built-in ultra large capacity battery.It is able to contain pens and other stuff. 4.High quality light bead,professional eyes protection without radiation.long lifetime. 5.Bendable metal soft tube,360deg;rotation freely. Manipulation: 1.light touch on the switch to turn on,the luminosity is electrodeless light adjustment. 2.There is a red light when it is charged until full,the light go out. 3.Charge time:2-3 hours. 4.Using continuously when it is charged,15 hours for low gear,7 hours for middle gear,4-5 hours for high gear. 5.During usage,when the light is dim,which means the battery is in discharge condition.For the battery safety,please stop using and charge it before the light goes out.Otherwise,the battery is easily damaged. 6.Non-Radiation or offending to the eye,making high quality eye protection desk lamp,which cares our eyes kindly. Package contents: Desk lamp*1 Instruction*1 USB cable*1