ORIENT RN-AK0005S
ORIENT SUN&MOON Automatic Mechanical Watch RN-AK0005S User Manual
Model: RN-AK0005S
1. Introduction
Thank you for choosing the ORIENT SUN&MOON Automatic Mechanical Watch, Model RN-AK0005S. This timepiece from ORIENT's signature "Sun&Moon" Contemporary Collection combines a new caliber with a distinctive design. It features a day/night display mechanism with the sun and moon indicator at the 6 o'clock position, and a semi-skeleton at the 9 o'clock position, allowing you to observe the intricate movement of the mechanical watch.
This manual provides essential information for the proper use and care of your watch. Please read it carefully to ensure optimal performance and longevity of your timepiece.
Key Features:
- Automatic and Manual Winding Mechanical Movement
- Sun&Moon Day/Night Indicator
- Semi-Skeleton Dial showcasing movement
- Date and Day of Week Display
- Second Hand Stop Function
2. Setup and Initial Adjustment
Before using your watch, ensure it is properly wound and set.
2.1 Winding the Watch
Your ORIENT SUN&MOON watch is an automatic mechanical timepiece, meaning it is powered by the motion of your wrist. It also supports manual winding.
- Automatic Winding: Wear the watch regularly. Normal daily activities will keep the mainspring wound.
- Manual Winding: If the watch has stopped or has low power reserve, you can manually wind it. Rotate the crown clockwise in position 0 (normal position) for approximately 20-30 turns until the second hand starts moving. Do not overwind.

Image: Side view showing the crown for winding and setting.
2.2 Setting the Time, Date, and Day
To ensure accurate timekeeping and proper function of the Sun&Moon indicator, follow these steps:
- Pull the crown to position 2 (outermost position). The second hand will stop (second hand stop function).
- Rotate the crown to set the time. Advance the hands clockwise until the correct time is displayed. Pay attention to the Sun&Moon indicator to distinguish between AM and PM. The Sun&Moon indicator will change around 12 AM (midnight).
- Push the crown back to position 1 (middle position).
- Rotate the crown clockwise to set the date.
- Rotate the crown counter-clockwise to set the day of the week.
- Once all settings are correct, push the crown back to position 0 (normal position).
Important: Avoid setting the date or day between 9 PM and 4 AM, as this can damage the movement. If you need to adjust during this period, first set the time outside this range, adjust the date/day, then reset the correct time.

Image: Dial detail showing Sun&Moon and day indicators.
3. Operating Your Watch
3.1 Sun&Moon Indicator
The Sun&Moon indicator at the 6 o'clock position visually represents the time of day. The sun symbol appears during daylight hours, and the moon and stars appear during nighttime hours. This indicator automatically advances with the hour hand, completing one full cycle every 24 hours.
3.2 Day of Week Display
The day of the week is displayed in a sub-dial, typically located on the upper left side of the main dial. It automatically changes at midnight, synchronized with the Sun&Moon indicator.
3.3 Semi-Skeleton Feature
Your watch features a semi-skeleton design at the 9 o'clock position, offering a glimpse into the intricate mechanical movement. This allows you to appreciate the craftsmanship and engineering of the watch's internal components.

Image: Detailed view of the Sun&Moon indicator.
4. Care and Maintenance
Proper care will help maintain the appearance and performance of your ORIENT watch for years to come.
4.1 Water Resistance
Your watch has a water resistance rating of 30 meters (3 ATM), suitable for daily life. This means it can withstand splashes, rain, or brief immersion in water, but it is not suitable for swimming, showering, or diving. Always ensure the crown is fully pushed in to maintain water resistance.
4.2 Cleaning
- Wipe the case and crystal with a soft, dry cloth.
- For leather straps, avoid prolonged exposure to water, direct sunlight, and harsh chemicals. Clean with a slightly damp cloth and allow to air dry.
4.3 Avoiding Damage
- Shocks: Avoid dropping the watch or subjecting it to strong impacts.
- Magnetic Fields: Keep the watch away from strong magnetic fields (e.g., speakers, refrigerators, mobile phones), as these can affect accuracy.
- Temperature Extremes: Avoid exposing the watch to extreme temperatures, both hot and cold.
- Chemicals: Do not expose the watch to solvents, detergents, perfumes, or cosmetics, as they can damage the case, strap, or gaskets.
5. Troubleshooting
If you encounter any issues with your watch, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or runs intermittently. | Insufficient winding. | Manually wind the watch by rotating the crown clockwise 20-30 times. Wear the watch regularly to ensure automatic winding. |
| Time is inaccurate (too fast/slow). | Exposure to magnetic fields; strong shock; need for service. | Keep away from magnetic sources. If problem persists after avoiding magnetic fields and shocks, professional service may be required. |
| Date/Day does not change or changes at wrong time. | Time set incorrectly (AM/PM); date/day adjusted during restricted hours. | Re-set the time, ensuring the Sun&Moon indicator correctly reflects AM/PM. Avoid adjusting date/day between 9 PM and 4 AM. |
| Condensation appears under the crystal. | Moisture ingress due to compromised water resistance. | Immediately take the watch to a qualified service center. Do not attempt to open the watch yourself. |
If the issue persists after attempting these solutions, please contact an authorized ORIENT service center or your retailer for assistance.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | RN-AK0005S |
| Movement | Mechanical (Automatic & Manual Winding) |
| Accuracy | Daily difference +25 seconds to -15 seconds |
| Power Reserve | Approximately 40 hours |
| Water Resistance | 30 meters (3 ATM) for daily life |
| Case Material | Stainless Steel |
| Crystal | Sapphire Glass |
| Case Diameter | 42.5 mm |
| Case Thickness | 14 mm |
| Band Material | Leather Strap (as shown in product images, may vary by variant) |
| Clasp Type | Double-lock folding clasp |
| Special Functions | Sun&Moon indicator, Day of Week display, Second hand stop function |
| Country of Origin | Thailand |
7. Warranty and Support
7.1 Manufacturer's Warranty
This ORIENT watch comes with a 1-year manufacturer's warranty from the date of purchase. The warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
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 used beyond its specified water resistance or if the crown was not properly closed.
- Damage to the strap or crystal.
- Unauthorized repairs or modifications.
7.2 Customer Support
For warranty service, repairs, or any questions regarding your ORIENT watch, please contact the retailer where you purchased the product or an authorized ORIENT service center. You can find contact information for authorized service centers on the official ORIENT website.
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