The GoPro HERO3 Underwater HDMI Video Out Housing from Eye of Mine is designed specifically for the GoPro HERO3 and HERO3+ cameras. It uses the FLAT LENS 3D housing that provides room for the HDMI cable to enter from the left, while the camera fits into the right side of the housing. Both the camera's top and front buttons work when it's placed in the housing, however, the LCD screen will not work. The camera functions as it normally would without the HDMI cable.
The housing also accommodates the camera when a GoPro Battery BacPac (available separately), which doubles the battery life, is attached to it. The housing is pressure tested to a depth of up to 40' and comes with a 25' HDMI cable. The separately available HDMI signal booster may be required as some portable HDMI monitors don't accept weak HDMI signals and will either show no signal or a signal that will cut in and out. An optional, permanently installed USB power cable (not included) allows powering the camera down to a depth of 32'.
Note: Even though this is a 3D housing, it cannot be used for 3D video due to the modifications made to it. None of the 3D kit contents are included. Remote control of the camera is not possible when placed in the housing. The maximum tested HDMI cable length is 35'. You may not be able to add any more length because microHDMI cables are not suitable for long runs. The outside end of the HDMI & USB cables must be above water, or over time, water may enter the housing through the cable under pressure.