---
product_id: 4940544
title: "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)"
brand: "acr"
price: "RM617"
currency: MYR
in_stock: true
url: https://www.desertcart.com.my/products/4940544-acr-firefly-pro-waterbug-led-strobe-light-military-grade-sos
store_origin: MY
region: Malaysia
---

# 360° water-activated beam 41 candelas high-intensity LED 56h strobe battery life 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)

**Brand:** acr
**Price:** RM617
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay visible, stay safe—because your emergency signal should never be a question.

## Quick Answers

- **What is this?** 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) by acr
- **How much does it cost?** RM617 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/4940544-acr-firefly-pro-waterbug-led-strobe-light-military-grade-sos)

## 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

- • **Long-Lasting Power:** Powered by AA lithium batteries with up to 56 hours of strobe light endurance—exceeding SOLAS & USCG standards.
- • **Compact & Ready-to-Go:** Slim, lightweight design fits seamlessly in life vests or survival kits for instant access.
- • **360° Water Activation:** Automatically turns on underwater, delivering over 3 miles of emergency signaling reach.
- • **Military-Grade Visibility:** 41 candelas of piercing LED light ensures you’re seen when it matters most.
- • **Versatile SOS & Strobe Modes:** Choose SOS, strobe, or steady-on for tailored emergency communication.

## Overview

The ACR Firefly Pro Waterbug is a SOLAS and USCG certified military-grade LED strobe light designed for marine safety. Featuring 41 candelas of high-intensity light, 360° water-activated signaling with over 3 miles visibility, and multiple modes including SOS and steady-on, it offers reliable emergency visibility. Compact and lightweight, it runs on AA lithium batteries providing up to 56 hours of strobe light, making it an essential, durable safety tool for boaters and offshore adventurers.

## Description

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)

## 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 |
|---------------|-------|
| Item Package Dimensions L x W x H | 9.06 x 5.75 x 1.3 inches |
| Package Weight | 0.09 Kilograms |
| Item Dimensions  LxWxH | 9.5 x 5.8 x 1.3 inches |
| Item Weight | 2.4 ounces |
| Brand Name | ACR |
| Warranty Description | Warranty |
| Model Name | 3971.3 |
| Color | Yellow |
| Material | Plastic |
| Suggested Users | unisex-adult |
| Number of Items | 1 |
| Manufacturer | ACR Electronics |
| Part Number | 3971.3 |
| Style | Lights |
| Included Components | Great Product |
| Size | One Size |

## Product Details

- **Color:** Yellow
- **Material:** Plastic
- **Light Source Type:** Light Emitting Diode
- **Power Source:** Battery Powered
- **Brand:** ACR

## Images

![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) - Image 1](https://m.media-amazon.com/images/I/71lF2grKeYL.jpg)
![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) - Image 2](https://m.media-amazon.com/images/I/51N5RUpRGaL.jpg)
![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) - Image 3](https://m.media-amazon.com/images/I/811n2tDTgRL.jpg)
![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) - Image 4](https://m.media-amazon.com/images/I/71c7O90XQcL.jpg)
![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) - Image 5](https://m.media-amazon.com/images/I/71vu3xF8vFL.jpg)

## 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)
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- ACR HemiLight3 HL3 Automatic Survivor Locator Light, Med, Solas, and USCGC Approved, Ensures Reliable, Automatic Distress Signaling for Swift Rescue in Emergencies.

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-01-23*