Dimensions: 3.11'' x 0.95'' x 1.94''. Strobe. SOS strobe. Impact resistant. Rechargeable. IPX8 waterproof submersible up to 2 meters under water. CREE XHP50 White LED Focused light. J-Hook buckle mounting system for universal usage. Two switch system. Diffused flood and focused light. Low battery indicator. USB and magnetic charging. Full range of motion. Focused Light Mode: Turbo (2500 lumens, 1.53h runtime); High (1180 lumens, 1.6h runtime); Medium (300 lumens, 4.95h runtime); Low (20 lumens, 2.78 day runtime). CREE XPG2 S3 White LED and CREE XPEBRD red LED flood light. Flood Mode: White (150 lumens, 6.4h runtime); Red output (625nm, 7h runtime); IR Output (850nm, 9.75h runtime). Diffused/flood light modes: white light, red light and IR light. Includes: Headstrap with J-Hook buckle and locking screw, Spare O-rings, and Magnetic USB charging cable. Requires (1) 18650 battery (included). Hardside carrying case.