ACR Firefly PRO SOLAS Emergency Strobe Light 3970-3, USCG/SOLAS Approved Marine Distress Signal

The ACR Firefly PRO SOLAS Emergency Strobe Light, part number 3970-3, is a personal distress strobe built to mark your location during low-light or nighttime emergencies on the water. It uses a cool white LED to produce a minimum of 26.8 candela per strobe flash at a rate of about 60 flashes per minute, giving a visible signal from over 3.2 miles away. Power comes from two standard AA batteries (not included), and on a fresh set the strobe runs for a minimum of 56 hours, giving rescuers a long window to spot the signal.

The case is built to military-spec durability standards and is factory tested waterproof to 33 feet (10 meters), so it keeps working even if fully submerged. It is compact and lightweight enough to fit inside an inflatable life jacket or a pocket. Two lashing loops on the housing, plus an included Velcro strap, give multiple mounting options, letting it be secured to a life jacket, belt, or pack so it stays within reach when an emergency happens. Activation is by a simple manual On/Off switch. The Firefly PRO SOLAS is SOLAS Approved and USCG Approved, meeting recognized standards for marine distress signaling equipment.

Specifications

• Brand: ACR
• Manufacturer Part Number: 3970-3
• Certification: SOLAS Approved, USCG Approved
• Lamp: LED, cool white
• Strobe Intensity: 26.8 Candela minimum
• Strobe Visibility: Over 3.2 miles
• Strobe Flash Rate: 60 flashes per minute +/-
• Strobe Operation: 56 hours minimum
• Waterproof Rating: Tested to 33 feet (10 meters)
• Activation: Manual On/Off switch
• Battery: 2 AA batteries (not included)
• Color: Yellow
• Material: Plastic
• Dimensions: 4.4 inches x 2.2 inches x 1.2 inches
• Weight: 1 pound
• UPC: 791659003404

Frequently Asked Questions

What is the ACR Firefly PRO SOLAS Emergency Strobe Light (3970-3) used for? The ACR Firefly PRO SOLAS Emergency Strobe Light, part number 3970-3, is a personal distress strobe designed to mark your location in low-light or nighttime emergencies at sea, attaching to a life jacket, belt, or pack via its lashing loops and Velcro strap.

How bright is the Firefly PRO SOLAS strobe light? It produces a minimum of 26.8 candela per strobe flash, visible from over 3.2 miles away, using a cool white LED light source.

How long does the battery last on the 3970-3 strobe light? Running on two AA alkaline batteries (sold separately), the Firefly PRO SOLAS operates continuously for a minimum of 56 hours at a flash rate of about 60 flashes per minute.

Is the ACR Firefly PRO SOLAS waterproof? Yes, the 3970-3 strobe light is factory tested waterproof to 33 feet (10 meters), making it reliable for submersion during an at-sea emergency.

Does the Firefly PRO SOLAS strobe light turn on automatically in water? No, the 3970-3 model uses a manual On/Off switch only; buyers who want automatic water activation should look at the separate Firefly PRO Waterbug (3971-3), which adds an armed water-activation mode.

What certifications does the ACR 3970-3 strobe light carry? The Firefly PRO SOLAS Emergency Strobe Light is SOLAS Approved and USCG Approved, meeting recognized marine safety standards for distress signaling equipment.

What batteries does the Firefly PRO SOLAS strobe light use? It runs on two standard AA batteries, which are not included with the 3970-3 strobe light and must be purchased separately.

How is the ACR 3970-3 strobe light mounted to a life jacket or gear? Two lashing loops on the case plus an included Velcro strap allow the Firefly PRO SOLAS strobe to be secured to a life jacket, belt, or pack for quick access in an emergency.

What are the dimensions and weight of the Firefly PRO SOLAS strobe light? The 3970-3 measures 4.4 inches by 2.2 inches by 1.2 inches and weighs 1 pound, in a compact, yellow, impact-resistant plastic case sized to fit inside an inflatable life jacket or pocket.

What is the difference between the Firefly PRO SOLAS and the Firefly PRO Waterbug? The 3970-3 Firefly PRO SOLAS uses a manual On/Off switch only, while the Firefly PRO Waterbug (3971-3) adds automatic water activation plus an SOS strobe mode and Steady-On feature alongside the standard strobe.

What material is the ACR 3970-3 strobe light case made of? The Firefly PRO SOLAS strobe light has a rugged, military-spec plastic casing built to withstand impact and harsh marine conditions.

Does the 3970-3 strobe light come with any accessories? Yes, the ACR Firefly PRO SOLAS Emergency Strobe Light includes a Velcro mounting strap in addition to its built-in lashing loops for attaching to gear.