Now get the Quasar Q-LED BiColor Lamp with LiOn Battery Power! Simple to use, no cords needed, just turn it on and you have either 3000K Tungsten, 4300K mixed or 5600K Daylight soft light. Just press the power button to switch between color temperatures. Available in 7 inch, 12 inch or 24 inch lengths. With magnetic feet, it's quick to mount on location, in studio, on a equipment cart or inside a grip truck. At full charge, on full power, get 4 hours of run time. The rechargeable battery uses a simple Micro USB power adapter at V3.0 -9V @2A / 12V 1.5A. Please note, it will not charge on standard USB 5 volt power. The Quasar Tube QLED LiOn LED Lamp provides a high CRI of 95, has an average life of 25,000 hours and is flicker-free. Built in dimming levels of 100%, 75%, 50%, 25%, 10% and off are accessed by pressing a single button. New models can be operated while charging. Older models can have firmware updated to allow operation while charging and access to 4300K color temperature.