Sea & Sea Motor Marine 35 MX-10 Camera/Strobe Kit: Easy to operate Built-in focus free 32mm lens Automatic film loading, advance and rewind Built-in flash in camera Built-in light meter Low exposure signal in viewfinder Exterior bayonet mount allows you to attach optional auxillary lenses underwater (!!!) Sea & Sea YS-40A strobe provides additional light for color resolution and high quality pictures Strobe incorporates built-in sensor for proper exposure Built-in diffuser provides wide coverage for 20 mm lenses No sync cord neccessary! Strobe interfaces with the camera using an infared optical system. This means no chance of leaking at flash connection.