Introduction
Welcome to the instruction manual for your new Thomas Earnshaw Nasmyth Sun Moon Dual Time Automatic Watch. This timepiece combines classic design with intricate mechanical complications, offering both elegance and functionality. This manual will guide you through the proper setup, operation, maintenance, and care to ensure the longevity and optimal performance of your watch.
Image: Front view of the Thomas Earnshaw Nasmyth Sun Moon Dual Time Watch.
Key Features
- Automatic Movement: Powered by the motion of your wrist, eliminating the need for batteries.
- Dual Time Feature: Allows tracking of a second time zone simultaneously.
- Sun/Moon Phase Indicator: Displays day and night cycles.
- 43mm Case Diameter: A prominent size for clear readability and presence.
- Solid Stainless Steel Case and Bracelet: Ensures durability and a sophisticated aesthetic.
Setup
Before wearing your watch, it is important to set the time and ensure it is adequately wound.
Winding the Watch
As an automatic watch, it gains power from the natural motion of your arm. However, if the watch has stopped or is low on power, it can be manually wound:
- Ensure the crown is in position 1 (fully pushed in).
- Turn the crown clockwise approximately 20-30 times. This will provide enough power for the watch to start running.
- Once started, regular wear (8-10 hours a day) will keep the watch wound. If not worn daily, consider a watch winder.
Setting the Time and Date
- Pull the crown out to position 3 (farthest out). The second hand will stop.
- Turn the crown to set the main time. Rotate the hands clockwise until the desired time is reached. Pay attention to the AM/PM cycle for the Sun/Moon indicator.
- Push the crown back to position 1 to start the watch.
Setting the Dual Time Sub-dial
The dual time sub-dial is typically adjusted independently. Refer to the specific mechanism of your watch, but generally:
- Locate the small pusher or recessed button on the side of the watch case, usually near the 10 o'clock or 2 o'clock position.
- Using a small, non-sharp tool (like a toothpick or a specialized watch tool), gently press the pusher repeatedly. Each press will advance the dual time hand by one hour.
- Continue pressing until the desired second time zone is set.
Image: Side view of the watch, showing the crown and potential pushers for adjustments.
Operating the Watch
Your Thomas Earnshaw Nasmyth watch is an automatic timepiece, meaning it is powered by a mechanical movement that winds itself with the natural motion of your wrist. It does not require a battery.
Automatic Movement
The watch contains a rotor that spins with your arm's movement, winding the mainspring. When fully wound, the watch can typically run for 36-40 hours without further motion. If the watch is not worn for an extended period, it will stop and need to be manually wound or worn again to restart.
Understanding the Dial Complications
- Main Dial: Displays the primary time (hours, minutes, seconds).
- Sun/Moon Indicator: Located on the upper part of the dial, this sub-dial visually represents day and night. The sun symbol indicates daytime hours, while the moon and stars indicate nighttime hours. This indicator moves in sync with the main hour hand.
- Dual Time Sub-dial: Typically located on the left side of the dial, this sub-dial allows you to track a second time zone. It operates on a 24-hour format, making it easy to distinguish between AM and PM in the second time zone.
Image: The watch worn on a wrist, highlighting the dial's features.
Maintenance and Care
Proper care will help preserve the beauty and functionality of your Thomas Earnshaw watch.
- Cleaning: Wipe the watch case and bracelet regularly with a soft, dry cloth to remove dust and fingerprints. For stainless steel, a slightly damp cloth can be used, followed by a dry one.
- Water Resistance: This watch has a water resistance rating of 5 ATM (50 meters). This means it is suitable for everyday use, light splashes, and short periods of recreational swimming. It is not suitable for diving, snorkeling, or prolonged water activities. Always ensure the crown is fully pushed in before any contact with water.
- Avoid Shocks: Mechanical watches are delicate. Avoid dropping the watch or subjecting it to strong impacts.
- Temperature Extremes: Avoid exposing the watch to extreme temperatures (hot or cold) or sudden temperature changes, as this can affect the movement's accuracy.
- Magnetic Fields: Keep the watch away from strong magnetic fields (e.g., speakers, refrigerators, certain electronic devices) as they can affect the watch's accuracy.
- Servicing: For optimal performance, it is recommended to have your automatic watch serviced by a qualified watchmaker every 3-5 years.
Troubleshooting
If you encounter issues with your watch, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch has stopped | Insufficient power reserve (not worn enough or not wound). | Manually wind the watch by turning the crown 20-30 times. Wear the watch regularly (8-10 hours/day). |
| Time is inaccurate (running fast/slow) | Exposure to magnetic fields, strong shock, or needs servicing. | Demagnetize the watch (can be done by a watchmaker). Avoid strong impacts. If persistent, seek professional servicing. |
| Crown is stiff or difficult to pull/push | Dirt accumulation or internal issue. | Do not force the crown. Clean around the crown. If issue persists, consult a watchmaker. |
If the problem persists after attempting these solutions, please contact Thomas Earnshaw customer support or an authorized service center.
Specifications
| Feature | Detail |
|---|---|
| Model Number | ES-8259-11 |
| Movement Type | Automatic Mechanical |
| Case Diameter | 43mm |
| Case Material | Stainless Steel |
| Bracelet Material | Stainless Steel |
| Clasp Type | Fold over buckle with push button |
| Water Resistance | 5 ATM (50 meters) |
| Product Dimensions | 0.87 x 1.69 x 0.59 inches; 3 ounces |
| Department | Men's |
Image: Rear view of the watch, showcasing the automatic movement through the exhibition case back.
Warranty and Support
Your Thomas Earnshaw Nasmyth Sun Moon Dual Time Watch comes with a 2 Years International Warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship under normal use.
The warranty does not cover:
- Damage resulting from improper handling, lack of care, accidents, or normal wear and tear.
- Water damage if the watch was not used within its specified water resistance limits or if the crown was not properly secured.
- Batteries, straps, or bracelets.
- Unauthorized repairs or modifications.
For warranty claims or technical support, please contact the authorized Thomas Earnshaw service center in your region or refer to the official Thomas Earnshaw website for contact information.
About Thomas Earnshaw
Thomas Earnshaw is a brand inspired by the 'Father of the Modern Chronometer' and a deep appreciation for vintage watchmaking techniques. Established in 2012, the brand aims to create exceptional watches that blend classic elegance with modern reliability, offering timepieces that honor the golden age of horology while redefining contemporary style.
Image: Thomas Earnshaw brand logo.
