Nocturnal Lights M700t Ultra Compact LED Dive Light 700 lm M700t.00 (battery not included)Requires: 2 units of CR123A Lithium Battery (not included with dive light). The M700t technical LED dive light is the latest dive light from Nocturnal Lights using a KIS (Keep It Simple) design philosophy. The M700t dive light is ultra compact, measuring at 5 1 4" long, 1" diameter at the body, and 1 1 2" diameter at the light head. The M700t dive light is so small and light it can be held, mounted, and stored away as if you are not diving and