The Streamlight SL-20L is a full-sized, professional-grade duty light engineered for high-intensity performance. It offers three microprocessor-controlled variable intensity modes and a strobe function, reaching up to 450 lumens and a 529-meter beam distance. The rugged aluminum housing features an anti-roll head and a polycarbonate lens with scratch-resistant coating. Black Anodized Aluminum construction, OAL 13.10, Head Diameter 2.50, Weight 27.2 oz, Water Resistant, modes Low / Medium / High / Strobe. This kit comes complete with a NiMH rechargeable battery, two charging sleeves, and both AC and DC smart charging cords. It provides up to 20 hours of runtime on low, making it a reliable tool for long-shift professional use.