The light intensity can be changed to offer professional effects. * Compatible with four different kinds of battery (Sony NP-F550, NP-F750, NP-F960 and NP-F970). * Can install on the DV or DC with standard hot shoe, and there also is a hot shoe locking knob to adjust it depends on your need. * One warm filter to reduce the color temperature, and two pieces of light covers. * Power switch to turn on/off the light and dimmer knob for brightness adjustment. Safety cold surface light.