The SL-20L is a full-size rechargeable duty flashlight for professionals who need a 450 lumen high mode and a 529 m beam. The SL-20L is a full-size professional flashlight machined from aircraft-grade aluminium and finished with a Type II anodised coating. The front is closed by an O-ring sealed, unbreakable polycarbonate lens with a scratch-resistant coating. At 33.3 cm long, 6.35 cm across the head and 0.77 kg with its battery, it is a traditional full-size light for hand-held and belt-carried use on shift. Key features Long-range high mode — High mode produces 450 lumens and 70,000 candela, throwing the beam 529 m down range for 3.25 hrs. Medium and low levels — Medium gives 225 lumens with a 374 m beam for 5 hrs, and low gives 60 lumens with a 189 m beam for 20 hrs. Strobe mode — A strobe mode runs for 4.5 hours for signalling and attention-getting work. Rechargeable Ni-MH pack — The 5-cell, 6.0 volt, 2.6 Ahr Ni-MH sub-C battery is rechargeable up to 1,000 times. Charge status indication — The illuminated switch housing indicates charge status, steady while charging and blinking when charging is complete. Water and impact resistance — The light is IPX4 water-resistant and tested to 1 m impact resistance. Typical applications Night-time patrol and perimeter checks where a long, tight beam is wanted. Fire and rescue searching of large spaces such as warehouses and plant rooms. Utility and industrial maintenance work across large sites. Vehicle-based security duties needing a dependable hand-held light. Technical specifications Light output, High 450 lumens / 70,000 candela / 529m beam distance / 3.25 hrs Light output, Medium 225 lumens / 35,000 candela / 374m beam distance / 5 hrs Light output, Low 60 lumens / 9,000 candela / 189m beam distance / 20 hrs Light output, Strobe 4.5 hours run time Battery 5-cell, 6.0 volt, 2.6 Ahr Ni-MH sub-C battery, rechargeable up to 1,000 times Charging Illuminated switch housing indicates charge status; steady for charging and blinking for charging complete Body Machined aircraft-grade aluminum with Type II anodized finish Lens O-ring sealed unbreakable polycarbonate lens with scratch-resistant coating Ingress protection IPX4 water-resistant Impact resistance 1m impact resistance tested Length 33.3 cm (13.1 in) Diameter 6.35 cm (2.50 in) major diameter Weight 0.77 kg (1.7 lbs) with battery In the box 1 × SL-20L - Without Charger Model information Brand Streamlight Model SL-20L - Without Charger MPN 20700