1xAA 100 Foot Waterproof light?

[jake25]

Is there such thing as a 1xAA light that goes down to 100 feet? And while we're at it any light that goes down to 100 feet? 18650? 16430?

TIA

 

[aussiebob]

Inova X1 Sportlight, Black Anodized, White LED - White LED , single bright LED array with precision ground AR coated glass lens for clear focused beam. Made from 2011 aircraft aluminum in a black anodized body color. Twist constant on/off or momentary tail cap switch. Waterproof to 150 feet. 10+ hours life with one AA battery.

Source: http://www.wellingtonsurplus.com.au/showProduct/LIGHTING/OTHER+FLASHLIGHTS/NT0057

 

[LEDninja]

If you are seriously going down to 100 feet look at the correct lights - DIVE LIGHTS.
Try Tektite, Pelican, Underwater Kinetics, Barbolight.

BTW the Inova X1 is too dim to be of any use 100 feet down.

 

[DM51]

I would not want to rely on a 1xAA light at any depth. I would not even want one as a back-up light. It would be too low-powered and/or have short run-time.

It might have a use if fastened to your harness/BCD and used just for illuminating your instruments or a diver's slate, but that is about all.

For a back-up light, the minimum you should look at would be something powered by 1x or preferably 2x CR123A cells (or Li-Ion equivalent). For a main light, something much more powerful.