Meet the ACR Firefly Pro Waterbug bulk LED Strobe Light — a SOLAS-approved beacon built for serious operations. This bulk-packaged unit isn’t carded for retail display, making it ideal for fleets, agencies, and professional deployments that demand reliable visibility when every second counts.

• Water-activated technology: A built-in activation feature automatically powers the light when submerged, ensuring you’re visible the moment you need it most.
• Four activation modes: Armed mode for automatic water activation, ultra-bright strobe, SOS strobe to signal Search and Rescue, and Steady-On for close-up recovery work.
• 360-degree visibility: Cool white LEDs deliver a full 360° beam with brightness over 41 candelas, providing visibility beyond 3.5 miles.
• Long-lasting power: Energy-efficient electronics and a smart microprocessor keep the Firefly Pro running for a minimum of 56 hours — 48 hours longer than SOLAS/USCG requirements and twice as long as many competitors.
• Clear, tint-free light: Cool white color with no yellow tint to maximize distance and clarity in all conditions.
• Rugged and waterproof: Durable construction rated waterproof to 33 feet (10 m) and factory-tested for reliability in harsh environments.

Technical specifications

• Product Number: 3970.4 (Bulk)
• Size: 4.4 x 2.2 x 1.2 inches / 11.7 x 5.7 x 2.8 cm
• Weight: 2.39 oz (68 g) without batteries
• Lamp: LED – cool white
• Strobe Intensity: 26.8 candela minimum
• Strobe Visibility: Over 3.5 miles
• Strobe Flash Rate: 60 flashes per minute ±
• Operation: ON/OFF switch and Water Activation
• Waterproof rating: 33 feet (10 m)
• Certification: SOLAS – Pending, USCG – Pending, IMO LSA – Pending, CE – Pending

Designed for reliability in critical moments, the Firefly Pro Waterbug combines advanced optics, extended burn time, and easy operation with bulk packaging that’s ready for professional usage. Whether you’re on a rescue mission, conducting recovery operations, or coordinating Search and Rescue efforts, this strobe light provides superior visibility, unmatched endurance, and the confidence of SOLAS-compliant design.