Fenix HM75R SE is a high quality Industrial head torch which features a powerful 1600 lumen main beam, 1000 lumen floodlight and 120 lumen red light in a compact magnesium alloy head unit, powered by a replaceable 3400 mAh, 18650 Li-ion battery, and charged via a USB-C port in the side of the head unit. HM75R is simple to operate, with a metal rotary switch for mode selection, and a central push button for brightness adjustment. The light features a proximity sensor to reduce output if it is placed very close to an object or accidentally switched on in a backpack etc. Fenix HM75R SE headlamp performance: ARB-L18-3400 internal battery: Spotlight Mode: Low: 50 lumens (50 hrs 50 min) - 39m beam Med: 350 lumens (11 hrs) - 101m beam High: 800 lumens (3 hrs 30 min) - 158m beam Turbo: 1600 lumens (1 hr 30 min) - 223m beam Floodlight mode: Low: 5 lumens (100 hrs) - 5m beam Med: 150 lumens (8 hrs) - 25m beam High: 400 lumens (4 hrs) - 43m beam Turbo: 1000 lumens (1 hr 50 min) - 60m beam Red light mode: Low: 5 lumens (110 hrs) - 4m beam Med: 30 lumens (32 hrs) - 9m beam High: 120 lumens (5 hrs 20 min) - 16m beam Flash: 5 lumens (220 hrs)