Features: brand new and high quality. If you want to use the clamp, please release it from the base and fix the table clamp on the suitable position ,where the plywood thickness requires less than equal40MM, rotating the lamp body to the best position. It can be used for painting, sewing, jewelry making, jigsaw puzzles, for cross stitch, repairing electronics, etc. Please connect the USB cord with charger or computer when first for time use. There is a red light on the base, it will be light on when connects electricity power, about 3h to be charging full. There is touchable switch on the base, it includes PWM dimmer, clicking it less than 550ms, which can control the light on and off. Touching it more than 550ms, this can control the PWM dimmer. Keep on touching, the brightness will be increased or decreased gradually. The brightness will stop changing when released. If touching more than 3S, the brightness will be up to the brightest or the darkest and no changing, so the cycle to repeat. Specifications: Material: ABS Frame+Metal Hose Bag Silicone Sleeve+Acrylic Lens Size: approx 18.5x12x42.5mm/0.73x0.47x1.67 inches Color: White Lamp working voltage: DC5V Light: 6LED Rechargeable battery: 400mAh Lithium Cell Power: 0.5W Luminance: 30Lm Colour Temperature: 6000K Source life: 25000h Package Includes: 1x LED Table Magnifier 1x USB Cable 1x Base note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.