Compact Head Bounce, LCD Mult Function III Swivel Alpha Sony Flash a7R E ARC150 TD 730 R7S 24 replacement light bulb E ARC150 TD 730 R7S 24 replacement light bulb lamp Please Be Aware That the Vehicle Compatible Chart May Not 100% Accurate Autofocus auxiliary lamp helps the camera to focus in low light situations Includes diffuser Guide Number (Guide Number = Distance × f number) Power Source: 2x 1