Feature: 1. Using thick high-grade earphone wire, soft feeling, anti-pull and wear-resistant, strong temperature adaptability. No block feeling after opening wire coiling, good elasticity. 2. Adopt high-quality flexible wire core as guide line, high elastic metal contact sheet as switch, durable without deformation, precision metal plug, closely connected shutter line interface. 3. Key components, internal use of metal reed contacts, minimal contact resistance, high conductivity and wear resistance. Plugs all use metal copper needles as connectors, long service life. 4. The key adopts double layer design, the micro-convex structure is easier to press, the forward sliding and push-pull is easy to be in place, strong springback and the positioning is accurate. 5. Support for focus, shutter release and BULB shooting. Take photos by pressing the shutter fully. 6. Minimize vibration during filming. Photograph inaccessible objects. Three shooting methods: single shooting, continuous shooting and video shooting. 7. Shutter release line is 90cm length, lightweight, good stability, easy to carry. Recommended for night/product/advertising/stage shooting, commercial photography, etc. Specification: Item type: SLR Camera Shutter Release Condition: 100% brand newModel: RM-S1AM Material: plasticWeight: Approx. 66gColor: blackShutter release line length: Approx. 90cm/35.4inShutter release compatibility list:RM-S1AM: for Sony a900 / a850 / a800 / a700 / a580 / a560 / a550 / a500/ a450 / a400 / a350/ a300 / a200 / a100 / a99/ a77 / a65 / a57 / a55 / a35 / a33 / a77M2 / a99M2for Konica Minolta DIMAGE a2 / a1 / 9 / 7Hi / 7i / 7 / 5 / 4 / 3 / DYNAX 7D / 5D. Package List: 1 x Shutter Release Remote Control1 x Instruction