The Nitecore SRT6i flashlight has a maximum output of 2100 lumens from the high performance LEDs and is powered by an iSeries 21700 li-ion battery (Nitecore NL2150HPi included). The battery is rechargeable inside the torch via a USB-C port with a rubber cover for resistance to dust, water and impact.
On the tail cap are two switches: the power button which turns the light on and off and provides momentary illumination and the 2-stage mode button activates the randomly changing strobe mode.
Turbo (3): 2100 lumens – 30 mins runtime
Mid (2): 300 lumens – 7 hrs 30 mins runtime
Low (1): 30 lumens – 70 hrs runtime
Plus Strobe (2100 lumens)
Maximum beam distance 510 meters, waterproof to IP68 and resistant to impacts up to 2 meters.