Utilizes a thick, high-quality headphone cable for a soft feel, anti-pull and wear-resistant properties, and strong temperature adaptability. No tangling after unwinding, with good elasticity. Adopts a high-quality flexible wire core as the control line, a highly elastic metal contact plate as the switch, durable without deformation, precision metal contact, closely connected shutter line interface. Key components internally use metal blade contacts, minimizing contact resistance, ensuring high conductivity and wear resistance. Plugs all use metal copper tips as contacts for long life. The key adopts a double-layer design, the micro-convex structure is easier to press, the forward sliding and pull-push are easy to be in place, with strong spring return and precise positioning. Supports focus, shutter, and BULB photography lock. Take pictures by fully pressing the shutter. Minimize vibrations during filming. Photograph inaccessible objects. Three shooting methods: single shooting, continuous shooting, and video shooting. The shutter release line is 90 cm long, lightweight, with good stability, and easy to carry. Recommended for night/product/advertising/stage photography, commercial photography, etc.