Underwater Kinetics C4 eLED (L2) Black BoxThe C4 eLED L2 is a major update to one of the worlds favorite dive lights. Combining a significant increase in lumen output with all the qualities you loved about the classic original C4, youll enjoy the L2 for any type of diving. A versatile and durable primary dive light, it produces a powerful, penetrating beam in a lightweight, compact case. The C4 eLED L2 produces 575 lumens on high and 200 lumens on low with a maximum runtime of 19 hours.