A Dive Light Primer

Lanyard attaches to wrist to prevent loss; clip may be added for addition security when not in use Switch Lock prevents accidental activation of light, best if lock can be manipulated while wearing gloves Impact-Resistant Case and Lens Shroudcases are typically thermoplastic, occasionally aluminum; lens shrouds are hard plastic or rubber and should extend beyond lens Battery rechargeable battery may be justified by frequent use; standard alkaline are easier to obtain worldwide Reflector beam width may be fixed or adjustable; wide beam provides better field of view on night dives, narrow beam better for penetrating dark nooks and crannies Dual Power high power for maximum illumination, low for increased burn time Buoyancy neutral or negative generally preferred, but there are advantages to having a light float when lost Bright IdeasIn the past year, High Intensity Discharge (HID) lighting technology surfaced in the technical diving community, and it has now edged into the general diving market. Using a gas-filled bulb and an electronic voltage regulator, HID lights generate a brilliant white color and draw less power to produce the same level of light as conventional bulbs.