* Cree XM-L2(U4) LED, 630 lumens output
* Uses a single AA battery or 14500 Li-ion battery
* Mechanically head rotary switch offers high reliability underwater
* Water pressure resistant construction, depth rated to 150 meters
* High efficiency constant current circuit, constant brightness
* Reverse polarity protection, to protect from improper battery installation
* Over-discharge protection function
* Constructed from high-strength A6061-T6 aluminum
* Mil-Spec Type III hard anodized finish for durability and corrosion resistance
* Two sides coated toughened glass with high water pressure resistance under deep water
