1. Introduction
Thank you for choosing the OLEVS OLS-DE-G6638GJ-QH Automatic Mechanical Watch. This timepiece combines classic design with reliable automatic movement, offering a sophisticated accessory for daily wear. This manual provides essential instructions for setting up, operating, and maintaining your watch to ensure its longevity and optimal performance.

This image displays the OLEVS Automatic Mechanical Watch, featuring a black dial with gold-toned hands and hour markers, three sub-dials for day, date, and 24-hour display, and a tachymeter bezel. A band adjustment tool is also shown, indicating the watch's stainless steel bracelet can be resized. The bottom right corner shows the luminous function activated in the dark.
2. Product Features
- Movement: Durable imported Japanese automatic mechanical movement, supporting both automatic and manual winding.
- Dial Design: Features a calendar display for month, week, and day, with a tachymeter chronograph bezel.
- Crystal: Triple anti-reflective sapphire glass, resistant to wear and scratches.
- Luminous Function: Analog display with luminous hands and markers for visibility in low light conditions.
- Watchband: Durable stainless steel bracelet with a high-gloss finish and hidden butterfly safety clasp.
- Water Resistance: Rated for 30 meters (3 ATM), suitable for splashes or brief immersion, but not for swimming or bathing.

This collage highlights key features of the OLEVS watch. It illustrates the watch's water resistance, the scratch-resistant sapphire-coated mirror, the intricate original mechanical movement visible through the case back, and the bright luminous hands and markers for visibility in low light.
3. Setup and Initial Use
3.1 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.
3.2 Winding the Watch
Your OLEVS watch is an automatic mechanical timepiece. It is powered by the motion of your wrist. If the watch has stopped or is running low on power, it can be manually wound:
- Ensure the crown is in its fully pushed-in position (Position 0).
- Rotate the crown clockwise approximately 30-40 times. This will provide enough power for the watch to start running.
- The watch will continue to wind automatically with your daily wrist movements. If worn daily for 8-10 hours, manual winding may not be necessary.
3.3 Setting the Time
- Pull the crown out to Position 2 (the outermost position). The second hand will stop.
- Rotate the crown to set the hour and minute hands to the desired time. To avoid confusion between AM and PM for date change, advance the hands past 12 o'clock until the date changes, then set the correct time.
- Once the time is set, push the crown back into Position 0. The second hand will resume movement.
3.4 Setting the Date and Day
The watch features sub-dials for day, date, and a 24-hour indicator.
- Pull the crown out to Position 1 (the first click).
- Rotate the crown clockwise to adjust the date.
- Rotate the crown counter-clockwise to adjust the day of the week.
- Avoid setting the date or day between 9:00 PM and 3:00 AM, as this is when the watch's internal mechanism is engaged in changing the date, and manual adjustment can cause damage. If adjustment is needed during this period, first set the time outside this window, adjust the date/day, then reset the time.
- Once the date and day are set, push the crown back into Position 0.
4. Operating the Watch
4.1 Automatic Movement
The watch is powered by an automatic mechanical movement. It harnesses the kinetic energy from your arm's motion to wind the mainspring. When fully wound, the watch has a power reserve that allows it to run for a certain period (typically 36-40 hours) even when not worn. If the watch stops due to lack of movement, simply manually wind it as described in Section 3.2.
4.2 Luminous Display
The hands and hour markers of your OLEVS watch are coated with a luminous material. To activate the luminescence, expose the watch dial to a bright light source (natural or artificial) for a few minutes. The stored light energy will allow the watch to glow in dark conditions, providing readability.
5. Maintenance and Care
5.1 Cleaning
To maintain the appearance of your watch, wipe the case and bracelet regularly with a soft, dry cloth. For stainless steel bracelets, a slightly damp cloth can be used, followed by a dry cloth. Avoid using harsh chemicals or abrasive materials.
5.2 Water Resistance
Your watch is water-resistant up to 30 meters (3 ATM). This means it is suitable for daily use and can withstand splashes, rain, or brief immersion in water. However, it is not suitable for showering, bathing, swimming, diving, or any activities involving prolonged water exposure or high-pressure water. Always ensure the crown is fully pushed in before any contact with water.
5.3 Storage
When not wearing your watch, store it in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for an extended period, consider placing it in a watch winder to keep the movement running and lubricated.
5.4 Avoidance
- Avoid exposing the watch to strong magnetic fields (e.g., speakers, refrigerators, mobile phones), as this can affect the accuracy of the mechanical movement.
- Avoid sudden impacts or shocks.
- Avoid extreme temperature changes.
6. Troubleshooting
6.1 Watch Not Running
- Check Winding: If the watch has not been worn for a while, it may have run out of power. Manually wind the watch by rotating the crown clockwise 30-40 times (crown in Position 0).
- Crown Position: Ensure the crown is fully pushed into Position 0. If it is pulled out, the watch will not run.
6.2 Date/Day Not Changing
- Time Setting: Ensure the time is set correctly, especially the AM/PM cycle. The date and day typically change around midnight.
- Manual Adjustment: If the date/day is stuck, try manually adjusting it using the crown in Position 1, ensuring you avoid the 9:00 PM to 3:00 AM window.
6.3 Water Ingress
If you notice moisture or condensation inside the watch crystal, immediately stop using the watch and contact customer support. This indicates a breach in the water resistance, and prompt action is needed to prevent further damage to the movement.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Model Number | OLEVS/6638 (OLS-DE-G6638GJ-QH) |
| Case Diameter | 40 mm |
| Case Thickness | 12 mm |
| Chain Width | 20 mm |
| Chain Length | 20 cm |
| Watch Dial | Tachymeter Chronograph Bezel |
| Mirror | High Hardness Coated Glass Mirror (Sapphire) |
| Watchband | Oyster Stainless Steel Strap |
| Movement | Original Brand Automatic Mechanical Movement |
| Waterproof | 30 meters (3 ATM) |
| Watch Weight | 130g |
Note: All sizes are manually measured; there may be a reasonable error. Please refer to the actual product.

This image presents a detailed table of the OLEVS watch's product parameters. It specifies the case diameter (40mm), case thickness (12mm), chain width (20mm), chain length (20cm), tachymeter chronograph bezel dial, high hardness coated glass mirror, oyster stainless steel strap, original brand movement, 30 meters deep water resistance, and a watch weight of 130g.
8. Warranty and Support
For any issues encountered with your OLEVS watch, please contact the seller or OLEVS customer support through the platform where the purchase was made. The professional after-sales team will provide assistance and service.





