Crafted with a thick, high-quality headphone cable for a soft, durable, and temperature-resistant feel. Enjoy tangle-free use and excellent elasticity. Features a flexible wire core as a control line and a highly elastic metal contact sheet as a switch, ensuring durability and precise metal contact for a secure shutter line interface. Key components utilize internal metal blade contacts for minimal resistance, high conductivity, and wear resistance. All contacts feature metal copper tips for extended lifespan. The key adopts a double-layer design with a micro-convex structure for easy pressing. Forward sliding and push-pull actions are effortless, with strong spring rebound and accurate positioning. Supports focusing, shutter release, and BULB photography. Capture images by fully pressing the shutter. Minimize vibrations during shooting and photograph inaccessible subjects. Offers three shooting modes: single shooting, continuous shooting, and video photography. The 90cm shutter release cable is lightweight, stable, and easy to carry. Recommended for night, product, advertising, stage, and commercial photography.