Introduction
Thank you for choosing the Coast G450 LED Flashlight. This manual provides essential information for the safe and effective use, maintenance, and troubleshooting of your new flashlight. Please read it thoroughly before operation and retain it for future reference.
The Coast G450 is a high-performance LED flashlight designed for various applications, offering 1630 lumens of brightness, a versatile Twist Focus system, and durable construction.

Image: The Coast G450 LED Flashlight, showcasing its black aluminum body and textured grip.
Safety Information
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
- Do not look directly into the LED light. The intense beam can cause temporary vision impairment or permanent eye damage.
- Keep out of reach of children.
- Ensure batteries are inserted with correct polarity. Incorrect insertion can damage the device or cause battery leakage.
- Remove batteries if the flashlight will not be used for an extended period to prevent leakage and corrosion.
- Do not mix old and new batteries, or different types of batteries.
- Dispose of used batteries according to local regulations.
Package Contents
Verify that all items are present in your package:
- Coast G450 LED Flashlight
- 6 x AA Alkaline Batteries

Image: The Coast G450 flashlight shown alongside six AA alkaline batteries, indicating they are included with the product.
Setup
Battery Installation
- Unscrew the tail cap of the flashlight by rotating it counter-clockwise.
- Insert six (6) AA alkaline batteries into the battery compartment, ensuring the positive (+) and negative (-) terminals align with the indicators inside the flashlight.
- Carefully screw the tail cap back on by rotating it clockwise until it is securely tightened. Do not overtighten.

Image: A detailed diagram of the Coast G450 flashlight, highlighting its key components including the Twist Focus, 6xAA alkaline batteries compartment, and tail cap. It also indicates the Pure Beam Focus and rugged IP54 water-resistant aluminum construction.
Operating Instructions
Power On/Off and Mode Selection (Quick-Cycle Switch)
The G450 features a Quick-Cycle Switch located on the tail cap for easy operation.
- To turn on: Press the Quick-Cycle Switch fully until it clicks. The flashlight will activate in High mode.
- To cycle through modes: With the flashlight on, lightly press the Quick-Cycle Switch (without clicking) to cycle between High, Medium, and Low light modes.
- To turn off: From any mode, press the Quick-Cycle Switch fully until it clicks again.

Image: A close-up view of the Quick-Cycle Switch located on the tail cap of the Coast G450 flashlight, with an arrow pointing to the switch for clarity.

Image: A visual representation of the three light modes available on the G450: 1630 lumens (High), 650 lumens (Medium), and 275 lumens (Low).
Twist Focus System
The G450 features COAST's patented Twist Focus system, allowing seamless transition between a focused spot beam and a broad flood beam.
- To adjust focus: Rotate the head of the flashlight clockwise or counter-clockwise.
- Pure-Beam Focusing Optic: This technology provides a seamless transition between the Ultra View Flood Beam and the Bulls-Eye Spot Beam without dark rings or hot spots.
- Ultra View Flood Beam: Provides edge-to-edge clarity in a wide circular pattern, ideal for illuminating large areas up close.
- Bulls-Eye Spot Beam: Projects a sharp, concentrated beam for long-range illumination, surrounded by a transitional halo to enhance the effective viewing area.

Image: A hand rotating the head of the Coast G450 flashlight, illustrating the Twist Focus mechanism with red arrows indicating rotational movement.

Image: A split image demonstrating the difference between the Bulls-Eye Spot Beam (focused, bright center) and the Ultra View Flood Beam (wide, even illumination) projected onto a surface.
Maintenance
Cleaning
To clean the flashlight, wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents. For the lens, use a lens cleaning cloth to avoid scratching.
Battery Replacement
When the light output diminishes significantly, it is time to replace the batteries. Follow the battery installation steps in the Setup section. Always replace all six batteries at once with new, identical alkaline batteries.
Storage
Store the flashlight in a cool, dry place. If storing for an extended period, remove the batteries to prevent potential leakage and damage to the flashlight's internal components.
Water Resistance
The Coast G450 is rated IP54 for water resistance, meaning it is protected against dust ingress and splashing water from any direction. It is not designed for submersion. Ensure the tail cap is fully tightened to maintain water resistance.

Image: Icons representing dust and water resistance, along with a 'Lifetime Warranty' badge, emphasizing the flashlight's durable construction.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Dead or incorrectly inserted batteries. | Check battery polarity and replace with fresh batteries. |
| Light output is dim. | Low battery power. | Replace all batteries with new ones. |
| Beam does not focus properly. | Twist Focus mechanism may be obstructed. | Ensure the head of the flashlight can rotate freely. Clean any debris. |
| Flashlight flickers. | Loose tail cap or dirty battery contacts. | Tighten the tail cap. Clean battery contacts with a clean eraser or cotton swab. |
Specifications
| Feature | Detail |
|---|---|
| Model | G450 |
| Light Source | LED |
| Brightness (High) | 1630 Lumens |
| Brightness (Medium) | 650 Lumens |
| Brightness (Low) | 275 Lumens |
| Beam Distance (High) | 280 meters (918 feet) |
| Run Time (High) | 4.5 hours |
| Run Time (Medium) | 11 hours |
| Run Time (Low) | 35 hours |
| Power Source | 6 x AA Alkaline Batteries |
| Material | Aluminum |
| Water Resistance | IP54 (Splash Resistant) |
| Dimensions | 8.43"D x 2.25"W x 2.25"H |
| Weight | 0.73 Pounds (11.68 ounces) |
| Special Features | Twist Focus, Pure-Beam Focusing Optic, Quick-Cycle Switch |

Image: The Coast G450 flashlight displayed with its key performance metrics: 1630 lumens of brightness and a beam distance of 280 meters, adhering to FL1 Standard.

Image: A chart illustrating the estimated run times for the Coast G450 flashlight on a single set of batteries: 4.5 hours on High, 11 hours on Medium, and 35 hours on Low.
Warranty and Support
Lifetime Warranty
The Coast G450 LED Flashlight is backed by a lifetime warranty against defects in materials and workmanship. This warranty covers the original owner and is valid for the lifetime of the product. For warranty claims or service, please visit the official Coast website or contact their customer support.
Customer Support
For further assistance, technical support, or to inquire about replacement parts, please refer to the contact information provided on the official Coast website (www.coastportland.com).





