Winder LX (4- AA) 3/98 * For use with Pentax LX camera. * Advance rate: up to 2 fps. * Single frame shutter speed range: 4s - 1/2000 except B. * Continuous shooting shutter speed range: 1/125 - 1/2000. * Auto motorized rewind. * Mounts to base of camera via tripod socket. * Shutter triggered by camera release button.