Diameter: 1.18 in.

Length: 6.3 in.

Weight: 3.53 oz.

Beam divergence: 15 degrees

Kelvin Color temperture: 5500

Lumen output: 300

Cree 5W with proprietary lens

Pressure depth: 600 ft.

Run time: 3-5 hr with fresh batteries (standard AA) @ full power.

Twist on/off

Triple seals on light head

6061 aircraft grade black anodized billet aluminum

Okay for out of water use.