The Manual Timer Remote Control Shutter (M) is an advanced shutter release tool for Nikon cameras. The MTR can be used to trigger the camera"s shutter, as well as lock the shutter open while in bulb mode. This functionality is useful for long-exposure photographic techniques, such as light painting and star trails. The MTR can also be used as an intervalometer, able to capture groups of images while controlling the delay before the initial exposure, the exposure time, and the time-interval between each exposure. The Remote can control the camera shutter from up to 1 meter away, and has a standby battery life of 2 years.