Nikon EH-61 Coolpix AC Adapter for Nikon Coolpix 2100, 3100, and SQ Digital Cameras
The Nikon EH-61 AC Adapter allows Coolpix 2100 and 3100 and Coolpix SQ digital cameras to operate on regular 120v household current. This provides a constant power source, which is especially important when downloading images from the camera to you PC.