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 illuminate when connected to power and remain on during charging, which takes approximately 3 hours to fully charge. To use the clamp, detach it from the base and attach the table clamp to a suitable position where the tabletop thickness is less than or equal to 40mm. Adjust the lamp head to the desired position by rotating the neck. The base features a touch-sensitive switch with PWM dimming functionality. Tap the switch for less than 550ms to turn the light on or off. Press and hold for more than 550ms to adjust brightness graduallybrightness increases or decreases while holding and stops when released. If held for more than 3 seconds, the brightness will cycle to maximum or minimum and remain fixed until released, then repeat the dimming cycle. Model: -9006 Lamp Working Voltage: DC5V Light Source: 6 LED Rechargeable Battery: 400mAh Lithium-ion Power: 0.5W Luminance: 30 Lumens Color Temperature: 6000K Light Source Life: 25000 hours Color: White Material: ABS Package Contents: 1 x LED Table Magnifier 1 x USB Cable 1 x Base Note: Light reflections and display settings may cause slight color variations between the product image and the actual item. Measurement tolerances allow for an error of +/- 1-3 cm.