Streamlight 20603 SL-20L Full Size Rechargeable LED Flashlight with 120-Volt AC/DC Charger Anodized machined aluminum construction with knurled barrel for a sure grip C4 LED technology, with a 50,000 hour lifetime Unbreakable polycarbonate lens with scratch-resistant coating NiCd battery/NiMH battery rechargeable up to 1,000 times; fully recharges in 7 hours Select high, medium, low or strobe modes with multi-function, push-button switch