NST 20 - Wristwatch Nautica - Free user manual and instructions
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| Product Type | Wristwatch |
| Brand | Nautica |
| Model | NST 20 |
| Movement Type | Quartz |
| Display Type | Analog with date window |
| Case Material | Stainless steel |
| Case Diameter | 42 mm |
| Band Material | Stainless steel |
| Crystal Type | Mineral glass |
| Water Resistance | 100 meters / 10 ATM |
| Chronograph Function | 60-minute timer with 1/5 second accuracy |
| Additional Functions | Date display, tachymeter bezel |
| Power Source | Silver oxide battery (SR626SW equivalent) |
| Weight | Approximately 150 grams |
| Cleaning Instructions | Wipe with a soft, lint-free cloth; avoid harsh chemicals |
| Maintenance | Battery replacement every 2-3 years; professional service recommended |
| Safety Disclaimer | Do not operate chronograph pushers underwater; ensure crown is pushed in |
| Spare Parts | Replacement straps, batteries, and crystals available |
| Repairability | Designed for standard watch repair; parts accessible to professionals |
| Warranty | Standard Nautica warranty covers manufacturing defects |
Frequently Asked Questions - NST 20 Nautica
How do I set the time and date on my Nautica NST 20?
To set the time, pull the crown to position 2 (the second click) and rotate it clockwise or counterclockwise to adjust the hands. For the date, pull the crown to position 1 (the first click) and turn it clockwise to advance the date display until it shows the correct day. Push the crown back in after setting.
Is the NST 20 water-resistant and can I swim with it?
Yes, the NST 20 has a water resistance rating of 100 meters (10 ATM). It is suitable for recreational swimming, snorkeling, and everyday splashes, but not for scuba diving or high-speed water sports. Always ensure the crown is pushed in and the pushers are not operated underwater.
How do I use the chronograph function?
The chronograph allows you to measure elapsed time. Press the top pusher (start/stop) to begin timing, press it again to stop. Use the bottom pusher to reset the chronograph hands to zero. The subdials track minutes and seconds, while the main second hand acts as the stopwatch hand.
What type of battery does the NST 20 use and how do I replace it?
The watch uses a silver oxide battery, commonly type SR626SW or equivalent. Battery replacement requires opening the case back, which should be done by a professional watchmaker to prevent damage and maintain water resistance. The battery typically lasts 2-3 years.
Can I adjust the date manually?
Yes, the date can be adjusted manually by pulling the crown to the first position and rotating it clockwise. Avoid changing the date between 9 PM and 4 AM, as the date mechanism may be engaged during this time, which could damage the movement.
How should I clean and maintain my Nautica watch?
Clean the watch with a soft, lint-free cloth slightly dampened with water. Do not use solvents, alcohol, or abrasive cleaners. For metal bands, use a soft brush with soapy water and rinse with clean water, then dry thoroughly. Periodically check the crown and pushers for smooth operation.
Why has my watch stopped working?
The most likely cause is a depleted battery. If the watch has been dropped or exposed to moisture, mechanical issues may also be present. We recommend having the battery replaced by a qualified technician first; if the watch still does not run, contact Nautica support for further assistance.
Can I replace the metal band with a leather or silicone strap?
Yes, the NST 20 uses a standard 20 mm lug width, so you can replace the stainless steel bracelet with any compatible 20 mm strap. Use a spring bar tool to remove the existing band and attach the new strap, or have it done at a watch store.
What is the tachymeter bezel used for?
The tachymeter bezel allows you to calculate speed based on time over a known distance. Start the chronograph at the beginning of the distance and stop at the end. The number on the bezel where the chronograph hand points is the average speed in units per hour (e.g., miles per hour or kilometers per hour).
Is the NST 20 suitable for everyday wear?
Absolutely. The stainless steel construction and mineral crystal provide durability for daily use. With a water resistance of 100 meters and a classic sporty design, it pairs well with both casual and professional attire. Just remember to follow the care instructions to keep it looking its best.
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USER MANUAL NST 20 Nautica
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Product information
Brand : Nautica
Model : NST 20
Category : Wristwatch