Battery operated:Portable wireless desk light with built-in rechargeable battery,free to take to anywhere that without outlet，use as emergency light when power outage.Also can be uses while pluged in. Easy knob control:Press to turn on/off; Long press for 3 color modes changing（warm light/warm white/nature white); Spin for stepless dimming.Allowed LED lamp adjust to the best lighting mode for your ambient conditions. USB charging port:Comes with an universal USB-C cable and adapter,also can charge it with power bank, laptop, desktop.3hrs to fully charged.2500mah long lasting battery, can be used 4hrs on high brightness,27hrs on low brightness. Foldable:Foldable design with two folding shaft,adjust to different height and lighting direction. Don't take too much place,portable for travel.Minimalist design with metal materail,stylish and excellent gift for father,boyfriend,brother. Eye caring:Eye-caring LED desk lamp up to 400LM with no flicker and no blue light,perfect for long-term use.Memory function, no need to set it everytime you turn it on.12 months worry-free guarantee.