Product Review

Features:
Moving the waterline away from the lens makes it possible to capture images both above and below the water simultaneously.
These are often referred to as half and half, 50/50, over under or split-level pictures.
Easy to operate, nearly infinite depth of field, wide-angle lens and video and still image quality make the GoPro perfectly suited for this application.
The T05 Dome Port utilizes a custom made semi-hemispherical acrylic dome that has been optically matched to work with the GoPro lens,package includes GoPro housing and a floating handheld, all you need is a camera,turn it on and produce stunning imagery.
The use of a semi-hemispherical dome eliminates the perpendicular angle between the backing plate and the dome.The benefits of this are the elimination of circular reflection and improved water sheeting while reducing the form factor and maintaining full front face surface area. The side of the base has 12 screw,this design allows the dome to be fully disassembled for cleaning and service
. The T05 Dome Port attached the Hero5 Black housing and does not require any special modifications or separate accessories.
The Hero6/5 Black is just as secure as always since the Dome Port slips right onto the housing, it does not alter the depth rating of the GoPro housing.
The Dome Port provides access to mode, power and shutter control buttons while installed,for more processing you can use a GoPro WIFI remote control as well.

The link for how to use the dome port:
https://youtu.be/jgJkKs5R2D0

Specification:
Shipping Weight:0.6 kg
Package Dimension :22 x 14 x 19cm/8.7 x 5.5 x 7.6 inches

Package Includes:
1 x TELESIN T05 Dome Port for GoPro Hero5 Black
1 x Dive Handle Grip
1 x Screw and Wrench
1 x Clean Cloth
1 x TELESIN packaging box
Warranty:
one year guarantee