The Sola 4000 video light is the size with twice the power of the 2010 Sunray 2000 lights. This design allows beam control from 60 degree to 90 degree. Custom cyan filter rotates into place to harness this power for daylight wide angle work. Built-in lithium-ion battery is charged through external charge ports with gold plated receivers for years of use. You never need to remove the battery and charging is easy and fast on beach or boat.