ACR Firefly PRO Waterbug LED Strobe
Best emergency beacon for offshore sailors and maritime safety enthusiasts.
This is the ultimate insurance policy for anyone spending time on the water. It packs military-grade reliability and blinding, three-mile visibility into a footprint small enough to forget you’re wearing. You sacrifice the simplicity of a basic glow stick, but you gain a professional-grade rescue tool that actually works when the conditions turn dire.
$74.95
More Firefly Pro options
Who it's for
- Safety-conscious mariners requiring certified, high-visibility rescue gear
- Solo sailors needing automatic activation if incapacitated
- Offshore adventurers prioritizing long-lasting emergency signaling
Who should skip it
- Budget-focused boaters seeking affordable, non-certified signaling options
- Casual users wanting low-maintenance, set-and-forget safety equipment
- Campers needing a versatile, multi-purpose light source
Performance breakdown
Visibility Range
Three-mile reach ensures you remain detectable even in vast, open water.
Battery Longevity
Over 56 hours of strobe time provides significant peace of mind.
Build Durability
Military-spec casing withstands the harshest marine environments without compromise.
Operational Versatility
Three distinct modes cover everything from long-range signaling to close-up recovery.
Portability
Compact footprint integrates seamlessly into standard life jacket pockets.
Regulatory Compliance
Exceeding USCG and SOLAS standards guarantees professional-grade reliability.
Key Specs
Light Output
41 candela
Beam Angle
360 degrees
Battery Life (Strobe)
Over 56 hours
Battery Life (Steady-On)
28 hours
Power Source
Single set of AA Lithium batteries
Certifications
USCG, SOLAS
Housing Material
Military spec casing
Model Number
3970.4
Know before you buy
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Ask Metto anything about the ACR Firefly PRO Waterbug LED Strobe before you decide.
