Multi-Function Timer Controlled Remote Shutter Release. Essential for releasing your camera while mounted to a telescope without moving or vibrating your gear. Even the smallest vibration can cause blurry images when shooting through a telescope especially with long exposures. Also, a great solution for the photographer wanting to do delayed or long exposures or take photos at an interval (Time-lapse) anywhere from 1 second to 99 hours, 59 minutes, and 59 seconds. It is easy to set up and use. The lighted LCD makes the remote convenient for use in any setting.