Depth Rating 450 feet /  140 meters
Material / Construction Machined Aluminum 6061-T6, Hard Anodized, dull black sealed finish. Polycarbonate Ports, Stainless and delrin hardware
Number of operational camera Controls supported (4) total:  On/Off/ModeMenu button; Start/Stop Recording button; LCD Back On/Off button; Setup Menu button
Type of Controls Mechanical, large, spring actuated levers. Unaffected by depth
Ease of use while wearing dive gloves Extremely easy to operate controls while wearing thick neoprene or dry gloves.
Housing Latching system Dual spring loaded, locking.
Underwater Field of View (FOV) coverage Underwater FOV appx. 100% the same as the in-air FOV
Minimum Focus distance Around  6 inches
Optical Design – Intended usage Designed and optimized for Underwater imaging* Images above water will be slightly out of focus at infinity. It will close focus out of water.
Optical Design – Construction Water Corrected poly carbonate concentric Dome,  with an Anti-reflective coated Glass diopter element factory installed.
Image Sharpness and Edge Distortion Improved image sharpness  and reduced image edge distortion at all wider angle imaging modes
Vignetting (edge darkening at corners) None. Supports all aspect ratios, including SuperView®
Support internal Color Correcting (CC) filters Supports screw in 77mm Color Correcting filters*  See below.
Lens Protective Shade Petal Type Included
Protective Lens Cap Included
Supports External HDMI support or Vacuum Leak Check device. One 7/16-20 UNF plugged accessory port for adding a bulkhead connector or Leak Sentinel V3 system** See below.
Condensation Reduction Features Includes Desiccants.  Dome optical chamber is Dry Nitrogen purged.
Mounting Options (2) 1/4-20 mounting holes on both the top and bottom. 4 total.
Handle / tray for mounting the camera to underwater video lights Includes a dual handle tray for handling, and for adding video lights. Each handle has 1/4-20 female mounting hole on the top for video light hardware.
Housing dimensions Appx 6.0”x  5.0” x 5.5”153mm x  127mm x  140mm housing only
Weight in Air Appx 3.25 lbs housing only.  With handle 4.0 lbs
Buoyancy Slightly Negative appx 6 oz. housing only, with handle 8 oz negative.
Fits these GoPro Models GoPro® Hero4 Black and Silver, Hero3+, Hero3  any color edition.
GoPro® camera and LCD Bacpac Included? Not Included.
GoPro Color LCD Touch Bacpac and Battery BacPac Supported? GoPro LCD Touch Bacpac on the Black Edition Hero4 is highly recommended because the housing front obscures the camera’s front LCD screen.  Also supports the GoPro Battery Bacpac instead of the LCD back.
Warranty 2 year materials and workmanship. Renewable
Available factory service; warranty renewal Replace O-rings, adjust, pressure test for a fee to be announced.

*Requires removal of Dome to install internal CC filter. Appropriate installation skills and tools required or can be factory installed. You can order a filter from us, or send us your favorite 77mm CC filter and we will install it and pressure test the unit after installation at no additional charge except freight.

** Accessory waterproof cable bulkhead fitting fits a 1/4 inch cable out.   Leak Sentinel V3 system coming soon. See website for more accessories.