Battery Navigation Light Requires 4 AA batteries (not included) Molded one piece body construction Shock resistant neoprene accents Rated at 100,000 hours LED service life LED uses 90% less energy than incandescent Sealed Heavy Duty On/Off Switch Insert molded brass threaded mounting bushings Removable lamp carriage assembly 6.18 x 2.53WARNING: This product can expose you to chemicals including BISPHENOL A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.