This high visibility clip-on waterproof light will keep you illiuminated during your evening, night, and early morning swims.  With dual functionality controlled by which way the batteries (2 x CR2032) are installed, the light can shine a steady beam or flash to alert swimmers, paddlers, and watercraft of your location.  The lens dome is designed for maximum visibility, and the clip is designed to fit on your suit, goggles, or Quackpacker! 
 
Instructions for Use & Warnings:
 
Tighten dome fully to ensure waterproofing.
Do not remove the rubber gasket on the threading of the dome - this is the component that keeps the device waterproof.
When not in use, remove batteries and store separately, rather than just loosening the dome. 
Loosening the dome may allow water to penetrate the inside of the light, causing corrosion and rust. 
Loosening the dome may drain the batteries.
Flip the battery to switch between the steady light and flashing light functions