LED-Lenser® general use lights represent the best combination of quality, efficiency and value. Their exclusive Cloverleaf reflector and crystal reflector tube systems, combined with the highest quality Nichia LED's, produce the brightest, most efficient flashlights available today. General use flashlights include everything from keychain sized lights to full size 'C' cell powered lights with multiple LED's, and are perfect for home and emergency use. This ingenious design cleverly combines a quality pen with a powerful LED flashlight. The 3 in 1 model includes two keychains, allowing the user to separate the light and pen for use as independent items. The beam has a constantly on and two alternate frequency signalling settings.