--- product_id: 4940544 title: "3971.3 Firefly PRO Solas Water Activated Rescue Strobe Light" brand: "acr" price: "20014 kr" currency: ISK in_stock: true reviews_count: 11 category: "Acr" url: https://www.desertcart.is/products/4940544-3971-3-firefly-pro-solas-water-activated-rescue-strobe-light store_origin: IS region: Iceland --- # 360° water-activated beam, 3+ miles visibility 41 candelas ultra-bright output 56 hrs strobe on AA lithium batteries 3971.3 Firefly PRO Solas Water Activated Rescue Strobe Light **Brand:** acr **Price:** 20014 kr **Availability:** ✅ In Stock ## Summary > 🚨 Stay Seen, Stay Safe: The Ultimate Marine Signal Light You Can’t Afford to Miss! ## Quick Answers - **What is this?** 3971.3 Firefly PRO Solas Water Activated Rescue Strobe Light by acr - **How much does it cost?** 20014 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/4940544-3971-3-firefly-pro-solas-water-activated-rescue-strobe-light) ## Best For - acr enthusiasts ## Why This Product - Trusted acr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Visibility:** 360° beam visible over 3 miles, delivering superior brightness that meets SOLAS & USCG standards. - • **Compact & Ready-to-Go:** Lightweight, pocket-sized design fits seamlessly in life jackets or survival kits for instant access. - • **Extended Battery Life:** Powered by AA lithium batteries offering up to 56 hours of strobe time—double the competition. - • **Triple Activation Modes:** SOS, Strobe, and Steady-On modes for versatile, reliable signaling in any emergency scenario. - • **Military-Grade Durability:** Rugged casing built to withstand harsh marine environments, ensuring your safety gear never fails. ## Overview The ACR Firefly Pro Waterbug is a SOLAS and USCG certified military-grade LED strobe light designed for marine safety. Featuring a powerful 41-candela output with 360° water-activated visibility over 3 miles, it offers SOS, strobe, and steady-on modes powered by long-lasting AA lithium batteries. Compact and rugged, it fits easily into life vests and survival kits, delivering reliable emergency signaling with up to 56 hours of strobe time—exceeding industry standards for durability and performance. ## Description Product Description The ACR Firefly PRO Waterbug SOLAS is a SOLAS‑approved emergency strobe light designed to enhance visibility and safety for mariners, boaters, and offshore adventurers. This rugged LED strobe features automatic water activation that instantly turns the light on when submerged, as well as a manual on/off switch for controlled use. Compact, lightweight, and compliance‑certified, the Waterbug SOLAS is ideal for life jackets, survival kits, personal safety gear, and emergency signaling at sea. From the Manufacturer The Firefly PRO Waterbug LED Strobe Light is one of the brightest, most feature-packed emergency strobe lights available. With three activation modes—ultra-bright strobe, SOS strobe for Search and Rescue alerts, and Steady-On for close-up recovery—it’s designed to save lives in extreme conditions. Featuring an advanced light output management system, it produces over 41 candelas of light for up to 56 hours using AA lithium batteries. Its wide-light emission LEDs create a 360 beam visible over 3 miles, offering superior brightness with cool white light, free from yellow tinting. Built with a rugged military-grade casing, it withstands harsh environments. With a compact design, it fits easily inside life jackets or pockets for comfortable wearability. The Firefly PRO exceeds USCG and SOLAS requirements, offering twice the battery life of competitors. The included Velcro strap and lashing loops ensure quick and easy mounting to gear, keeping it within reach when you need it most. Review: Works like they say it does - Looks good and works fine. The light output is good and bright but I don't see the cost in the construction. The plastic is thin and they don't even supply batteries with it. Review: Important safety feature - Good product size and illumination ## Features - Military-Grade LED Rescue Strobe Light – High-Intensity, 41 Candelas for optimal visibility and reliable signaling in emergency situations, ensuring safety and clarity. - Activation Modes: SOS, Strobe, and Steady-On for versatile signaling, ensuring reliable visibility and optimal performance in any emergency condition. - Water-Activated with a 360 beam, offering over 3 miles of visibility for reliable signaling and enhanced safety in emergency situations. - Powered by AA Lithium batteries, providing 56 hours of strobe and 28 hours of steady-on mode, exceeding USCG & SOLAS standards for reliable emergency signaling. - Small, compact, and hand-held, this device fits easily inside an inflatable PFD lifevest, ensuring convenient storage and quick access during emergencies. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00KC68SVA | | Best Sellers Rank | #154,870 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #42 in Boat Strobe & Safety Lights | | Brand Name | ACR | | Color | Yellow | | Customer Reviews | 4.5 4.5 out of 5 stars (54) | | Date First Available | October 3, 2013 | | Included Components | Great Product | | Item Dimensions LxWxH | 9.5 x 5.8 x 1.3 inches | | Item Package Dimensions L x W x H | 9.06 x 5.75 x 1.3 inches | | Item Weight | 0.15 Pounds | | Manufacturer | ACR Electronics | | Material | Plastic | | Model Name | 3971.3 | | Number of Items | 1 | | Package Weight | 0.09 Kilograms | | Part Number | 3971.3 | | Size | One Size | | Style | Lights | | Suggested Users | unisex-adult | | Warranty Description | Warranty | ## Product Details - **Color:** Yellow - **Material:** Plastic - **Light Source Type:** Light Emitting Diode - **Power Source:** Battery Powered - **Brand:** ACR ## Images ![3971.3 Firefly PRO Solas Water Activated Rescue Strobe Light - Image 1](https://m.media-amazon.com/images/I/71lF2grKeYL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works like they say it does *by J***. on July 13, 2024* Looks good and works fine. The light output is good and bright but I don't see the cost in the construction. The plastic is thin and they don't even supply batteries with it. ### ⭐⭐⭐⭐⭐ Important safety feature *by D***Y on August 19, 2025* Good product size and illumination ### ⭐⭐⭐⭐ Review *by O***N on January 10, 2026* NO ERA LA MARCA ESPERADA PERO ANDA CORRECTAMENTE ## Frequently Bought Together - ACR Firefly Pro Waterbug LED Strobe Light – Military-Grade, SOS & Steady-On Modes, SOLAS & USCG Certified, High-Intensity Marine Safety, Emergency Visibility & Durability (3971.3) - LuxoGear Emergency Whistles with Lanyard Safety Whistle Survival Shrill Loud Blast for Kayak Life Vest Jacket Boating Fishing Boat Camping Hiking Hunting Rescue Signaling Kids Lifeguard Plastic 2 Pack - ACR HemiLight3 HL3 Automatic Survivor Locator Light, Med, Solas, and USCGC Approved, Ensures Reliable, Automatic Distress Signaling for Swift Rescue in Emergencies. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/4940544-3971-3-firefly-pro-solas-water-activated-rescue-strobe-light](https://www.desertcart.is/products/4940544-3971-3-firefly-pro-solas-water-activated-rescue-strobe-light) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-27*