As a tactical light, the Nitecore P20 was specifically designed for professional users. Optimized one-handed operation, a removable grip ring, a strobe that can be immediately used on demand and delay-free, plus the option to also use the light as a glass breaker characterize the P20. Three pre-selectable modes are available: Tactical Mode (turbo and strobe), Law Enforcement Mode (turbo, medium and strobe) and General Mode (low, medium, turbo and strobe) support situationally appropriate pre-settings. One Nitecore battery type 18650 or 2 batteries of type CR123 can be used as the power source. In order to compensate for the slightly larger diameter of the battery, a battery magazine is included with the light that effectively prevents the slightly smaller CR123 batteries from rattling. 800 lumens (ANSI) in turbo and 400/70 lumens (battery CR123) or 290/40 lumens (battery 18650) in medium and low modes provide a wide application spectrum. With a runtime of up to 5 hrs. 50 min. in turbo mode (when using a battery with 3400 mAh), the P20 also provides extreme endurance performance, where the capacity indicator integrated into the switch clearly communicates the charging status. The removable two-way clip and optional accessories, such as a tactical holster or a special cable switch, provide additional value. Hardcoat-anodized aluminum housing with coated mineral glass lens, waterproof as per IPX-8. Length: 134 mm. Head diameter: 31.8 mm. Gehäuse 25,4 mm. Weight 101 g. Shipped with battery magazine and 2 CR123 batteries.