It is designed for GoPro 4/3+/3， suitable for water photography to provide superior optical performance.

Features:
Designed for GoPro 4/3+/3， suitable for water photography to provide superior optical performance.
Semicircular design to move the waterline from the camera lens， it can eliminates the perpendicular angle between the camera lens and waterline， making it possible to capture images both above and below the water simultaneously.
The dome port equips with a waterproof case for GoPro 4/3+/3，  not requiring any other accessories.
The side of the base has 12 screws， this design allows the dome to be fully disassembled for cleaning.
Easy to operate， wide-angle lens to help you take immersive photos.
Made of high quality acrylic material.
Comes with a handheld floaty grip， cleaning cloth and mini hex driver， better to meet your needs.

Specifications:
Material: Acrylic !#!amp!*! ABS
Item Size: 19 * 19 * 10cm / 7.5 * 7.5 * 3.9in
Item Weight: 373g / 13.2oz
Package Size: 21 * 19.5 * 4.5cm / 8.3 * 7.7 * 1.8in
Package Weight: 679g / 1.5lb

Package List;
1 * Dome Port
1 * Floaty Grip
1 * Cleaning Cloth
1 * Wrist Strap
1 * Long Screw
1 * Mini Hex Driver