Compact and bright, the Princeton Tec Meridian Strobe lets you pick a white or red flashing light that can be seen for over a mile. Waterproof down to 328 feet (100 m). Mount the Meridian on a lash tab, PFD shoulder strap or diving harness with the included attachment strap. The large toggle switch lets you easily choose white or red strobe. Contains one white MaxBright LED and one red MaxBright LED. LEDs send out 100 lumens of light and give you a max burn time of 100 hours on three AAA alkaline batteries (included).