For your primary dive light, you want to choose a powerful device that ensures you a great visibility in dark environments. Canister lights have been embraced by technical divers, cave divers and wreck divers. But not only in caves, but also during night dives you want a reliable light source. On any dive really, you want to be able to peak into every gap and look under every rock. Canister Lights are reliable light sources, as they mostly run on powerful, rechargeable battery packs that last a very long time.
After years of development, Halcyon is setting a new standard for primary dive lights. Check out the powerful Halcyon Focus Primary Dive Light with an adjustable beam and a 5 hour run time. Or have a look at Light Monkey's LED and HID lights, which are known for their durability and reliability.