The NA-BMPCCII is not just an update of the original NA-BMPCC, it is a ground up redesign for the new Blackmagic Pocket Cinema Camera 4K designed to take full advantage of the great new features of this cinema camera.
Nauticam's design philosophy is driven by allowing immediate access to all essential controls within easy reach of the handles, allowing the shooter to make adjustments without having to take their eyes off the screen. Within reach of the right handle are the trigger as well as a control dial for iris, a lever to capture still images as well as a double thumb lever for the white balance and autofocus. A recessed double thumb lever, situated between the trigger and the rear thumb lever accesses the ISO and Shutter Angle (Shutter Speed). Three assignable buttons are atop the housing near the right handle as well as three buttons on the right rear for HFR, Auto-Iris, Zoom and Menu.  A thumb lever on the left side activates Review.
The underside of the housing has mounting points for use with the Tripod Mounting Ball Set (PN 25218) removing the use for a bulky tripod plate.
The NA-BMPCCII is built around the N85 Port System which offers a variety of port configurations for a large selection of lenses. The Pocket Cinema Camera 4K features a four thirds lens mount making it compatible with the Olympus M.Zuiko 14-42mm F3.5-5.6 II R lens that when paired with the WWL-1 provides ultra-sharp full-zoom-through wide-angle performance. The WWL-1, when used with the bayonet mount system can be exchanged underwater for the optional CMC-1 or CMC-2 to allow for the capturing of up to 130º wide-angle, macro and super-macro all on the same dive. 
The housing features several bulkheads including the large-bore M28 which supports the use of an HDMI 2.0 recorder such as the Atomos Ninja V through the Nauticam Atomos Ninja V Housing (PN 17922). 

The Nauticam vacuum check and leak detection system is shipped with NA-BMPCCII as standard equipment. With the pre-installed vacuum valve, this monitoring system provides constant updates on the watertight and safe-to-dive status of the housing. A simple color-coded LED lighting system lets the user know that the vacuum is solid, or that the housing is losing vacuum. Leak detection is built into the same circuit, so if there is water intrusion, an audible and visual indication will occur.
The Nauticam system is temperature compensated, eliminating false alarms caused by a change in outside temperature, or from a camera heating up on an action packed dive.
The industry's easiest to use housing closure system, requiring very little hand strength to operate, secures the housing back in place. The latches are safely locked to prevent accidental opening, but are easy to open when needed for a quick battery or memory card change.
Patented Port Locking System
Unveiled on the very first Nauticam DSLR housing in 2009, this locking lever has become a signature of the Nauticam brand. No twisting or threading action is required to mount a port, and it locks securely in place with this lever. Nauticam also offers locking port extensions, meaning a dome will never twist, even when used with a long extension ring.