5.51 Inch overall. Lanyard. High Performance cool white LEDs. TIR lens and Converging lens. Rotary knob and Toggle switches. 800m beam distance. USB-C charging cable. Silicone surface for increased grip. Mode: Floodlight L7 (14000 lumens, 3h 10m runtime); L6 (6400 lumens, 3h 15m runtime); L5 (3200 lumens, 4h 30m runtime); L4 (1600 lumens, 7h 30m runtime); L3 (800 lumens, 13h runtime); L2 (400 lumens, 22h runtime); L1 (200 lumens, 40h runtime); Max 450m beam distance. Mode: Spotlight L7 (850 lumens, 6h 40m runtime); L6 (650 lumens, 7h runtime); L5 (500 lumens, 9h 50m runtime); L4 (300 lumens, 11h 40m runtime); L3 (200 lumens, 19h runtime); L2 (100 lumens, 31h runtime); L1 (50 lumens, 59h runtime); 800m beam distance. 3.11 Inch head diameter. Requires (3) 21700 batteries (included). Boxed.