1. Product Overview
The Fossil Men's Bronson Quartz Chronograph Watch, Model FS5851, is a robust timepiece featuring a chronograph movement, date display, and a durable stainless steel construction. Its design incorporates a black sunray dial with three functional subdials for enhanced timekeeping capabilities.

Image 1.1: Front view of the Fossil Men's Bronson Quartz Chronograph Watch. This image displays the black sunray dial, three subdials, and the black stainless steel bracelet.
2. Setup and Initial Use
2.1 Unboxing and Inspection
Upon receiving your watch, carefully remove it from its packaging. Inspect the watch for any visible damage. Ensure all protective films are removed from the crystal and case back.
2.2 Setting the Time
- Locate the crown on the right side of the watch case.
- Gently pull the crown out to the second click position. The watch hands will stop.
- Rotate the crown clockwise or counter-clockwise to set the hour and minute hands to the correct time.
- Once the time is set, push the crown back into its original position. The watch will resume running.
2.3 Setting the Date
- Gently pull the crown out to the first click position.
- Rotate the crown to adjust the date. Rotate it until the correct date appears in the date window.
- Avoid setting the date between 9 PM and 3 AM, as this can interfere with the automatic date change mechanism.
- Push the crown back into its original position.

Image 2.1: Side profile of the watch, highlighting the crown and the two chronograph pushers on the right side of the case.
2.4 Bracelet Adjustment
The stainless steel bracelet can be adjusted for a customized fit. This typically involves removing or adding links. For optimal results and to prevent damage, it is recommended to have this adjustment performed by a professional jeweler or watch repair service.

Image 2.2: The Fossil Bronson watch displayed on a male wrist, illustrating its size and fit.
3. Operating the Chronograph Function
Your Fossil Bronson watch features a chronograph (stopwatch) function with three subdials to measure elapsed time.
- Start: Press the top pusher (A) to start the chronograph. The chronograph second hand will begin to move.
- Stop: Press the top pusher (A) again to stop the chronograph. The elapsed time will be indicated by the chronograph hands.
- Reset: After stopping the chronograph, press the bottom pusher (B) to reset all chronograph hands to their zero positions.
- Split Time (if applicable): Some chronographs allow for split-time measurement. Refer to the detailed PDF manual for specific instructions if this feature is desired.

Image 3.1: An angled view from the side, showcasing the watch's thickness and the texture of the bezel, along with the pushers.
4. Maintenance and Care
4.1 Water Resistance
This watch is water resistant up to 50 meters (5 ATM). This means it is suitable for short periods of recreational swimming and showering. It is not suitable for diving, snorkeling, or high-impact water sports. Always ensure the crown is fully pushed in before any contact with water.
4.2 Cleaning
To clean your watch, wipe the case and bracelet with a soft, damp cloth. For stainless steel bracelets, a mild soap solution can be used, followed by thorough rinsing and drying. Avoid using harsh chemicals or abrasive materials, as these can damage the finish.
4.3 Battery Replacement
The watch is powered by a quartz movement requiring a product-specific battery. When the battery needs replacement, it is recommended to take your watch to an authorized Fossil service center or a professional watchmaker to ensure proper sealing and function.
4.4 Storage
When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. The original watch box or a soft pouch can provide protection.

Image 4.1: The rear view of the watch, displaying the stainless steel case back and the folded clasp of the bracelet.
5. 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 Section 2.2 and 2.3 to reset the time and date.
- Chronograph Hands Not Resetting to Zero: If the chronograph hands do not return to their zero position after pressing the reset pusher, consult the full user manual or a professional watch service for adjustment.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | FS5851 |
| Case Diameter | 44 mm |
| Band Width | 22 mm |
| Movement | Quartz Chronograph |
| Crystal Material | Hardened Mineral |
| Water Resistance | 5 ATM (50 meters) |
| Battery | 1 Product Specific battery (included) |
| Case Material | Stainless Steel |
| Band Material | Stainless Steel |

Image 6.1: A diagram indicating the watch's case height of 44mm and lug width of 22mm.
7. Warranty and Support
For detailed warranty information, please refer to the official Fossil website or the warranty card included with your purchase. For further assistance or service, contact Fossil customer support.
Additional resources:
- Official User Guide (PDF): Download Here
- Official User Manual (PDF): Download Here






