Please check all parts to ensure they are fully equipped. Connect the USB cable to a charger or computer when using for the first time. A red light on the base will turn on when connected to power; it takes about 3 hours to fully charge. To install the clamp, remove the base and attach the table clamp to a suitable position where plywood thickness is less than or equal to 40mm, then adjust the lamp body to the desired angle. The base features a touch switch with PWM dimming function. A tap of less than 550ms turns the light on or off. Touch and hold for more than 550ms to adjust brightness graduallybrightness increases or decreases while touching and stops when released. If held for over 3 seconds, the brightness will cycle to maximum or minimum and remain fixed until released. Model: -9006 Lamp working voltage: DC5V Light source: 6 LED Rechargeable battery: 400mAh Lithium Cell Power: 0.5W Luminance: 30Lm Color Temperature: 6000K Source life: 25000h Color: White Material: ABS Package Contents: 1 x LED Table Magnifier 1 x USB Cable 1 x Base Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3cm.