This desk light with a stable pen c-ontainer & p-hone holder and flexible tube which can be twisted to any positions owns 3 distinctive colors temperature to meet any different lighting requirements. What are you waiting for? Just come and buy. (Optional)High capacity cell: Built-in 500mAh high capacity rechargeable cell for long-lasting use. Flexible bendable tube design: Nice to adjust different illumination angle to suit diverse needed. Specifications: Type: Type 1(Without built-in cell)/ Type 2(With built-in cell)(Optional) Light colors: White color, warm white color, natural light Brightness level: Support Light source: LEDs Input: D V 5V Consumption: 4 W Cell: 1 * 3,7V 500mAh high capacity rechargeable cell Chargeing hours: 2-3 hours Working hours: 3-6hours(based on its brightness mode) Color temperature: 6000K(white color)/3000K (warm white color), 4000-6000K(natural light color) Material: Plastic Cable length: 0.8 meters Color: White Item size: 350 * 100 100mm/ 13.8 * 3.9 * 3.9inches(Length * Width * Height) Package size: 146 * 117 * 117mm / 5.7 * 4.6 * 4.6inches(Length * Width * Height) Package weight: Type 1: 205g/ Type 2: 225g Package list: 1 * light 1 * usb cable wire 1 * instruction