UR PRO FILTER = 4.2in REMOVABLEThis Ikelite External Color Filter for Bluewater has a diameter of 4. 2". The filter alters the blue color of warm salt water to give it a rich, natural tone. It also enhances the contrast of underwater video and photographs. It works exceptionally well in shallow depths up to 60'. The filter should be used with available light only.

The threaded shank of the gland is 19mm or 3/4″ long

Hard anodized and made to the finest quality to last a lifetime

– Consumption ≦18W

Threaded bezel for optional diffusers

Supports TTL operation with any compatible system featuring an Ikelite-style electrical bulkhead and two DS strobes

Weight: 128g (on land)

Effective with available sunlight up to 80 ft (24m)

This is far more accurate and consistent than "slave TTL" modes built into some underwater strobes which watch the camera's built-in flash and react

The Dive Volk close-up lens provides the effect of magnification and diopter +15

This Receiver is not intended for use with Ikelite brand underwater housings for the above cameras or for housings where the strobe is triggered directly from the camera’s built-in flash

Battery packs must be attached to a compatible strobe front to be waterproof

60m (197ft)