---
product_id: 150600182
title: "NSP-4640B"
brand: "nightstick"
price: "₩330246"
currency: KRW
in_stock: true
reviews_count: 10
category: "Nightstick"
url: https://www.desertcart.kr/products/150600182-nsp-4640b
store_origin: KR
region: South Korea
---

# 360 lumens max brightness 30 hours runtime IPX7 waterproof & dustproof NSP-4640B

**Brand:** nightstick
**Price:** ₩330246
**Availability:** ✅ In Stock

## Summary

> 💡 Illuminate your path, own the night with Forge™ precision.

## Quick Answers

- **What is this?** NSP-4640B by nightstick
- **How much does it cost?** ₩330246 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/150600182-nsp-4640b)

## Best For

- nightstick enthusiasts

## Why This Product

- Trusted nightstick brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Rear-facing green LED enhances visibility and situational awareness in critical moments.
- • **All-Day Power:** Up to 30 hours runtime keeps you illuminated through the longest shifts or adventures.
- • **Rugged & Reliable:** Built with aircraft-grade 6061-T6 aluminum and IPX7 rating for ultimate durability in any environment.
- • **Hands-Free Precision:** 360-degree multi-angle helmet mount ensures your light follows your every move seamlessly.
- • **Unmatched Brightness Control:** Three versatile modes from 30 to 360 lumens to tailor your light exactly how you need it.

## Overview

The Nightstick NSP-4640B Forge™ Helmet-Mounted Multi-Function Flashlight delivers professional-grade illumination with 360 lumens max brightness and three adjustable modes. Crafted from durable 6061-T6 aluminum and rated IPX7 waterproof, it’s designed for demanding outdoor and tactical use. Featuring a 360-degree helmet mount and a rear green safety LED, it offers hands-free versatility and enhanced visibility. Powered by two CR123A lithium batteries, it runs up to 30 hours, making it the ultimate companion for professionals who refuse to compromise on performance.

## Description

Product description Forge Helmet-Mounted Multi-Function Flashlight An Unwavering Powerhouse Nightstick Forge Helmet-Mounted Multi-Function Flashlight Case Material: 6061-T6 aluminum Meets Requirements of NFPA 1971-8.6 (2013) IP-X7 Waterproof Fits MSA Cairns 1010/1044 Traditional Fire Helmets Rear-facing Green Safety LED Added Layer of Protection: Our rear "Follow Me" light is designed to enhance visibility in hazardous conditions. With research showing green as the easiest color to see, this safety feature enables firefighters to be easily spotted in low-visibility environments. Available Colors Awaken the Primal Force: Harness the spirit of firefighting with the Forge in bold red or add an aura of strength with sleek black. 360° Pivoting Mount Mount Mastery: Experience unparalleled precision with the 360° pivoting mount with Forge. Effortlessly adjust the light's direction in any angle, ensuring accurate illumination exactly where you need it.

Review: Bright, sturdy, and long lasting battery - This light is much brighter than I thought it would be. It mounted very easily to my helmet and provides great illumination. The battery has not needed to be replaced yet and ive owned it for quite some time now. Its very durable and is easily adjustable. Great light.
Review: Great Fire Helmet Light - This is a great helmet light for any regular fire service needs. It's bright and has a good focused beam. The button has the "follow me" green light which actually does come in handy for keeping an eye on your team on the fire ground. The clamp is easy to install on the brim of any helmet and is very solid. The mount supports any angle which is helpful for helmets that have the larger flip-up safety visor. The battery life is great for its brightness. It takes 123 Lithium batteries but supports rechargeable batteries if you want.

## Features

- 360-lumen High, 180-lumen Low, 30-lumen Survival modes
- Single push-button switch
- Rear-facing green safety LED
- 360-degree multi-angle mount
- IP-X7 Water & Dust Proof, Meets requirements for NFPA-1971-8. 6 (2013)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SM518G4 |
| Additional Features | Adjustable |
| Batteries are Included | Yes |
| Battery Description | CR123a |
| Battery Type | Lithium Metal |
| Best Sellers Rank | #67,574 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #748 in Handheld Flashlights |
| Brand Name | Nightstick |
| Bulb Base | GU5.3 |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 180 Reviews |
| Included Components | Light, 2 CR123 Lithium batteries, Allen key |
| Item Dimensions D x W x H | 3.33"D x 1.44"W x 3.58"H |
| Item Dimensions L x W x H | 3.33"L x 1.44"W x 3.58"H |
| Item Type Name | FORGE™ Helmet-Mounted Multi-Function Flashlight |
| Item Weight | 204 Grams |
| Light Output Maximum | 360 Lumens |
| Light Path Distance | 218 Meters |
| Light Source Special Features | Survival Mode |
| Light Source Type | LED |
| Manufacturer | Bayco |
| Manufacturer Part Number | NSP-4640B |
| Manufacturer Warranty Description | Limited lifetime warranty. |
| Material | 6061-T6 Aluminum |
| Material Type | 6061-T6 Aluminum |
| Model Number | NSP-4640B |
| Mounting Type | Helmet Mount |
| Number of Batteries | 2 CR123A batteries required. (included) |
| Number of Light Sources | 3 |
| Power Source | Battery Powered |
| Recommended Uses For Product | Outdoor |
| Runtime | 30 hours |
| Shape | Rectangular |
| Size | Medium |
| Special Feature | Adjustable |
| Specification Met | IPX7 |
| Style Name | Modern |
| UPC | 017398807111 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited Lifetime Warranty |
| Water Resistance Level | Waterproof |
| White Brightness | 360 Lumens |

## Product Details

- **Special Feature:** Adjustable
- **Color:** Black
- **Power Source:** Battery Powered
- **Light Source Type:** LED
- **Material:** 6061-T6 Aluminum

## Images

![NSP-4640B - Image 1](https://m.media-amazon.com/images/I/61P+IIMdgZL.jpg)
![NSP-4640B - Image 2](https://m.media-amazon.com/images/I/81Q3N-HDzML.jpg)
![NSP-4640B - Image 3](https://m.media-amazon.com/images/I/81xj81VkYXL.jpg)
![NSP-4640B - Image 4](https://m.media-amazon.com/images/I/81Y0arC-EoL.jpg)
![NSP-4640B - Image 5](https://m.media-amazon.com/images/I/81sFODLrX5L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Bright, sturdy, and long lasting battery
*by D***I on April 2, 2026*

This light is much brighter than I thought it would be. It mounted very easily to my helmet and provides great illumination. The battery has not needed to be replaced yet and ive owned it for quite some time now. Its very durable and is easily adjustable. Great light.

### ⭐⭐⭐⭐⭐ Great Fire Helmet Light
*by J***Y on February 9, 2026*

This is a great helmet light for any regular fire service needs. It's bright and has a good focused beam. The button has the "follow me" green light which actually does come in handy for keeping an eye on your team on the fire ground. The clamp is easy to install on the brim of any helmet and is very solid. The mount supports any angle which is helpful for helmets that have the larger flip-up safety visor. The battery life is great for its brightness. It takes 123 Lithium batteries but supports rechargeable batteries if you want.

### ⭐⭐⭐⭐⭐ good to have on board tanker.
*by S***E on February 18, 2026*

good quality. robust design. Easy to fix to helmet. Strong fixture. high beam. 3 brightness level. like it.

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**Shop now:** [https://www.desertcart.kr/products/150600182-nsp-4640b](https://www.desertcart.kr/products/150600182-nsp-4640b)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-05-23*