Here is a cool video on the Citizen Eco-Drive Calibre 3100 Watch, Model Number BT0000-58L. This is a light-powered perpetual calendar watch. <br /><br />Share your favorite watch pictures and videos with us at <a class="link" rel="nofollow" href="http://www.your-guide-to-watches.com">http://www.your-guide-to-watches.com</a>
