Introduction
This manual provides detailed instructions for the Fossil Men's Machine Stainless Steel Chronograph Watch, Model FS5251SET. It covers setup, operation, maintenance, and specifications to ensure optimal performance and longevity of your timepiece. Please read these instructions carefully before using your watch.
Product Overview
The Fossil Machine Chronograph Watch FS5251SET is a robust and stylish timepiece designed for everyday wear. It features a 42mm black stainless steel case, a black dial with brown/cream accents, and a dark brown genuine leather strap. This gift set also includes a braided black and brown genuine leather bracelet.

Figure 1: Fossil Machine Chronograph Watch FS5251SET with accompanying braided leather bracelet.

Figure 2: Close-up top-down view of the watch dial, showing chronograph subdials and date window.

Figure 3: Side view of the watch, highlighting the crown and chronograph pushers.
Official Product Video Overview
Video 1: An official overview of the Fossil Men's FS5251SET Machine Chronograph Dark Brown Leather Watch and Bracelet Box Set, showcasing its features and design.
Setup
Setting Time and Date
- Pull the Crown: Gently pull the crown (the knob on the side of the watch) out to the first or second position. The number of positions depends on whether you are setting the date or time.
- Adjust Time/Date: Rotate the crown to adjust the hour, minute, and date. For detailed instructions on setting the date and ensuring proper AM/PM indication, refer to the official Fossil website.
- Push the Crown: Once set, push the crown back into its original position to start the watch movement.
Adjusting the Strap
The watch features a genuine leather strap with an adjustable buckle closure. To adjust the fit, simply move the buckle pin to the desired hole on the strap. The 22mm strap is interchangeable, allowing for customization with other compatible Fossil watch straps.

Figure 4: Men's Case Size Guide, illustrating different watch case diameters and thicknesses for reference.
Operating Instructions
Chronograph Function
The watch is equipped with a chronograph for stopwatch functionality, featuring three subdials to track minutes, seconds, and 24-hour time.
- Start/Stop: Press the top pusher button to start the chronograph. Press it again to stop.
- Reset: Press the bottom pusher button to reset the chronograph hands to zero.
Date Window
The watch includes a date window display. To adjust the date, pull the crown to the first position and rotate it. Ensure the time is set correctly to avoid the date changing at noon instead of midnight.
Official Product Video: Chronograph Features
Video 2: A brief demonstration of the Fossil Men's Machine Quartz Stainless Steel Chronograph Watch, highlighting its chronograph functions and overall design.
Maintenance
Water Resistance
This watch is water resistant up to 50 meters (165 feet). It is suitable for short periods of recreational swimming and showering. It is not recommended for diving or snorkeling.
Crystal Care
The watch features a hardened mineral crystal lens designed to resist scratches. To maintain its clarity, clean the crystal with a soft, damp cloth. Avoid harsh chemicals or abrasive materials.
Leather Strap Care
The genuine leather strap should be kept dry and away from direct sunlight or extreme temperatures to prevent damage and prolong its life. Clean with a soft, dry cloth. Avoid submerging the leather strap in water for extended periods.
Battery Replacement
The watch is powered by one included Lithium Ion battery. When the watch stops running or its accuracy declines, the battery may need replacement. It is recommended to have battery replacement performed by a qualified watch technician to ensure proper sealing and water resistance.
Troubleshooting
- Watch Not Running: Ensure the crown is fully pushed in. If the watch still does not run, the battery may need replacement.
- Incorrect Time/Date: Follow the instructions in the 'Setting Time and Date' section to re-adjust.
- Water Intrusion: If moisture appears inside the watch, immediately take it to a professional watch repair service.
For further assistance, please contact Fossil customer support or visit an authorized service center.
Specifications
| Feature | Detail |
|---|---|
| Model Number | FS5251SET |
| Case Diameter | 42 Millimeters |
| Case Thickness | 12 Millimeters |
| Band Width | 22 Millimeters |
| Band Material | Genuine Leather (Brown) |
| Case Material | Stainless Steel (Black) |
| Dial Color | Black |
| Movement Type | Quartz Chronograph |
| Water Resistance Depth | 50 Meters (165 Feet) |
| Crystal Type | Hardened Mineral |
| Power Source | Battery Powered (1 Lithium Ion battery included) |
| Clasp Type | Buckle |
| Item Weight | 8.8 ounces |
Warranty and Support
This Fossil watch comes with a manufacturer's warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official Fossil website. For customer support, service requests, or to locate an authorized service center, please visit www.fossil.com.



