.Feature: Remote shutter release cord is a useful accessory to prevent vibration when taking photos under long exposures, close-ups (macro), or continuous shooting. The shutter release button of this remote cord can be pressed halfway for auto-focus and exposure metering. A shutter release button lock is available for long exposure and continuous shooting. Press the button halfway to activate autofocus and set the shutter speed. Press the button completely to take a photo. For long exposures (camera should be in Bulb Mode), press the button down completely and slide in the direction of the arrow to lock the button. Slide the button back to its original position when finished. Suitable for nightscape shooting, product photography, advertising photography, stage photography, commercial photography, and other applications. Compatible with Nikon cameras: D100, D200, D300, D300S, D700, D800, D800E, D810, D4, D3, D4S, D3X, D3S, D1H, D1X, D2H, D2XS, F5, F6, F90, F90X, F100. Camera shutter release cord only; other accessories shown in the picture are not included.Specifications: Item Type: Camera Shutter Release Cord Model Number: MC-30 Material: ABS Cable Length: Approx. 1m / 39.3in Color: Black Quantity: 1 PieceInstructions: 1. Before using, insert the shutter plug into the camera's shutter socket, aligning any marks on the plug with those on the socket (if applicable), then turn on the camera power. 2. Gently press the shutter release button halfway to activate the cameras autofocus and light metering system. 3. Fully press the shutter release button to release the shutter and take a photo. 4. To enable long exposure (with camera set to Bulb mode), fully press and push the button forward to lock the shutter. Return the button to its original position to end the exposure.Note: Conversion: 1cm = 10mm = 0.39inch Please allow 01cm measurement deviation due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Thank you.Package Includes: 1 x Camera Shutter Release Cord