part # MT21C 5.15" overall. Water resistant. Impact resistant. Lanyard. Clip. Pack weight: 3.65oz. CREE XP-L HD V6 LED. 5 Brightness Modes: Turbo (1000 lumens, 1h runtime), High (400 lumens, 3h 45m runtime), Mid (190 lumens, 7h 30m runtime), Low (50 lumens, 25h runtime), Ultra low (1 lumen, 700h runtime). 3 Special Modes: Strobe, SOS, Beacon 184m beam distance. 90-degree adjustable head. Side switch control. Power indicator light. Polarity reverse protection. Advanced Temperature Regulation module. Aluminum construction. Mineral glass with anti-reflective coating. Magnetic base and tail stand capability. Includes: Lanyard, Pocket Clip, spare O-ring, Black nylon belt sheath. Use pocket clip to attach to the MOLLE straps on any our 5.11 Backpacks. Requires (2) CR123A batteries (not included), (1) High Performance 3500 mAh 18650 battery, or (1) 18650 battery (not included). Color: Black. Max Output 1000 Lumens Max Beam Distance 184 m Max Beam Intensity 8600 cd Max Runtime 700 h 0 m / 29.16 d LED CREE XP-L HD V6 LED Battery 1 x 18650 or 2 x CR123 or 2 x RCR123 Special Modes Strobe, SOS, Beacon Beam Color White Light Length 131 mm / 5.15 in Head Size 25.4 mm / 1 in Weight 103.5 g / 3.65 oz Ratings IPX8 waterproof and submersible, 1m impact resistant Feature Magnetic base, Metal hanging loop, 90-degree adjustable head, Tail Stand Capability, Built-in power indicator, SOS, Strobe, Beacon