The Automatic Floating Strobe Light from ACR Electronics automatically rights itself when overboard and activates when in the water with the reliable gravity switch. Provides a minimum of 3 candela of light with its 360 high-intensity Xenon strobe light and can be seen 3 miles away. The UV-stable PVC housing is waterproof and watertight. This light uses a 6V screw-terminal battery (sold separately, Model 4545638) to deliver a 60-hour signal giving an overboard crewmember a chance of being rescued. Includes bulkhead bracket mount and is USCG approved and SOLAS compliant. Key Features Brilliant 360 strobe LED automatically activated in water Will flash continuously for 60 hours Bulkhead bracket mount included Floats and is waterproof Specifications Type Approval: USCG and SOLAS Battery Type: Standard 6V Battery Life (continuous use): 60 hours Case Material: UV stable PVC Dimensions: 13-4/5”L x 4-4/5"dia. Light Type: Strobe Maximum Range of Visibility: 3 miles