- Function: The shutter trigger uses a movable block mechanism. Pull the tail of the movable block and press the front end downward; when the front end engages, the movable block rebounds and drives the connecting block, sliding plate and fixed column to touch the camera shutter, enabling shutter release without directly pressing it. - Benefits: Enables reliable shutter activation underwater while keeping your finger away from the direct shutter area; reduces hand movement and improves control when diving. - Design: Roller shutter extension lever designed to address the challenge of pressing the clasp while diving. Ergonomic trigger is adjustable to fit your finger, and the elevation-angle design is intended for underwater operation. - Compatibility: Suitable for DSLR cameras, such as B. - Use scenarios: - Underwater photography during scuba or snorkeling sessions. - Shooting with gloves or bulky wetsuits where direct shutter access is difficult. - Outdoor or wet environments where a quick, external shutter trigger is advantageous.