This canister light from Divepro is packing a lot of light for the price and tops out at about 4000 lumen equipped with the latest Cree XHP70.2 LED.
Control the output with stepless dimming. The 6 degree angle beam makes it great for communication as well as having a nice corona for the surroundings at about 60 degrees.
Burntime on full effect 210 min.
Waterproof to 100 meter.