WACP-1B N120/N100 0.36x Wide Angle Conversion Port with Integrated Float Collar and Interchangeable Port Mounting Ring N120 The TTL trigger also offers

The TTL trigger also offers manual and rear curtain sync

then steady green when the target vacuum level is reached

the meaning of the LED indicator in the housing:

Using color correction filters

WACP-1B N120/N100 0.36x Wide Angle Conversion Port with Integrated Float Collar and Interchangeable Port Mounting Ring N120 The TTL trigger also offersThe WACP 1B is a 0. 36x Wide Angle Conversion Port. Unlike traditional ports or wet mate corrective wide angle optics, the WACP 1B is a "dry" corrective optic that modifies a 28mm equivalent lens to an extremely sharp 130. Not only is the newer WACP 1B smaller and lighter, but it now integrates a built in buoyancy collar and offers a user interchangeable port mount from N120 to N100. Technical Specifications Depth Rating 100m Weight (in air) 3. 70 kg