Orcatorch D550 Upgraded Version with Tail Switch VS D520 with Rotary Switch
ORCATORCH D520 is a Compact Palm-sized Recreational Dive Light--1000 Lumens single output, this diving light has 12 degree narrow beam angle, which focuses the lumens of the light into tighter areas. And the overall light is 72 degrees, the beam distance can reach 250 meters.
ORCATORCH D550 Dive Torch--1000 Lumens with wrist strap, it has three modes and near to 6 hours runtime.
Video from Sekeli.