This Setolite professional flashlight has 4 functions: High, Low, SOS and flashing, 320 lumens, can be operated with one hand. Run time 3 hours on High Power and up to 12 hours on Low Power. Setolite has an incredible reputation by providing high quality and professional advice. Many defence clients rely on their products: Setolite provides a wide range of products for use in spaces in which area-lighting is needed.