[Brightness Adjustment]Unique dial power switch has variable fluid adjustment from 0-700 lumens of light output. So this work light can meet your numerous lighting needs. [USB Rechargeable]Equipped with Built-in battery with universal USB charging cable for easy charge and daily use. [Energy Efficient]It lasts 13 hour work time at 50% power, 3.5 at full power.The length of work time of the work light is related to the brightness of the light. [Magnetic Base and Swivel hook]Swivel hook & magnet base makes your hands free, and the body of the work light can be adjustable to provide multi-angle illumination. [Wide Application]COB LED work light is the most handy tool for home emergency lighting, car repair, camping, hiking and so on, one light to meet all your demands. Item Type: Flashlights Model of LED Beads: COB LED Model Number: COB Work Light ighting Distance: 100-200 m Support Dimmer: 2-4 files Waterproof: Yes Charger: Rechargeable Function: Hard Light type: COB LED quantity: 40 Power: 5W Voltage: 3.7V Lumen L: 400-700Lum Color temperature: White light Waterproof and dust-proof level: IP40 Power supply: 1 2500MA rechargeable lithium battery with charging protection Brightness adjustment: yes (without levels dimming) Switch type: rotary switch Flashlight Type: searching, camping, hiking, car repair,everyday carrying Colour:black Material:ABS Package Contents: 4 x COB LED work light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.