Neewer Replacement Remote Control MC-DC1 Wired Shutter Release Cord with LED Indicating For NIKON D70S D80 Digital SLR Cameras Prevent vibration : This remote cord can prevent vibration during long exposures, close-ups or continuous shooting. Halfway pressed button: The shutter release button of this remote cord can be pressed halfway for auto-focus and exposure metering. Shutter release button lock : A shutter release button lock is available which for long exposures shooting and continuous shooting. All electronic no batteries needed. Shutter release button: Dual Stage Button (halfway / complete)