Features: Let you take photos without touching the camera, this can effectively avoid camera shaking and photo blur. Half press the release button to activate the auto focus function and set the shutter speed; Completely press the release button to shoot. For long exposure (camera should be set in Bulb mode), press the button completely and slide in in the direction of the arrow, which locks the button depressed. Suitable for Nikon D500, D5, D4S, D4, D3S, D3, D2, D1, D800, D810, D810A, D800E, D700, D300S, D300 etc. Cable length: 84cm / 33inch.