Product Overview
The Ronda 515.24H is a high-quality quartz watch movement featuring a 24-hour hand (GMT) and date function. Designed for precision and reliability, this movement is suitable for various watchmaking and repair applications.
Figure 1: Front view of the Ronda 515.24H movement.
Figure 2: Back view of the Ronda 515.24H movement with battery.
Video 1: Demonstration of the Ronda 515.24H movement's thickness and internal components.
Specifications
| Feature | Detail |
|---|---|
| Item Type | Movement |
| Movement Type | Quartz |
| Caliber | 515.24H |
| Dimensions | 11½''', 25.60 mm diameter, 3 mm height |
| Functions | Multifunction, 24 hours hand (GMT), Date, 3 hands (Hour, Minute, Second) |
| Battery Included | Yes (RENATA 371 or equivalent) |
| Date Wheel Font | English |
| Date Wheel Colors | White |
| Origin | China |
| Weight | Approximately 0.03 kg |
| Package Dimensions | 10 x 10 x 2 cm (approximate) |
Setup and Installation
Installing a watch movement requires precision and appropriate tools. If you are not experienced in watchmaking, it is recommended to seek professional assistance.
- **Preparation**: Ensure your workspace is clean, dust-free, and well-lit. Have all necessary watchmaking tools ready, including tweezers, hand-setting tools, and a movement holder.
- **Unpacking**: Carefully remove the movement from its protective packaging. Note that a tiny washer/spring may be included in the bag; this must be placed on the shaft before mounting the dial. Two tiny strips pre-installed on the movement serve as temporary hour and minute hands for protection during transit and should be removed before installing your watch hands.
- **Stem Installation**: Gently insert the watch stem and crown into the movement's keyless works. Ensure it clicks into place.
- **Dial Mounting**: Align the dial feet with the corresponding holes on the movement. Carefully press the dial onto the movement, ensuring it sits flush and securely.
- **Hand Setting**: Using appropriate hand-setting tools, carefully attach the hour, minute, and second hands to their respective pinions. Ensure they are parallel to the dial and do not touch each other or the dial. The 24-hour (GMT) hand should also be set.
- **Case Installation**: Place the assembled movement and dial into the watch case. Secure it using the movement ring or screws as appropriate for your watch case.
- **Case Back**: Close and secure the watch case back.
Figure 3: Diagram illustrating the arrangement of hands and date window.
Operating Instructions
The Ronda 515.24H movement features a crown with multiple positions for setting the time, date, and GMT hand.
- **Position 0 (Pushed In)**: Normal running position.
- **Position 1 (Pulled Out One Click)**:
- **Date Setting**: Turn the crown clockwise to adjust the date.
- **GMT Hand Setting**: Turn the crown counter-clockwise to adjust the 24-hour (GMT) hand.
- **Position 2 (Pulled Out Two Clicks)**:
- **Time Setting**: Turn the crown in either direction to adjust the hour and minute hands. The second hand will stop (hacking feature) to allow for precise time synchronization.
After setting, gently push the crown back to Position 0 to resume normal operation and ensure water resistance (if applicable to your watch case).
Maintenance
- **Battery Replacement**: The movement uses a RENATA 371 (or equivalent) button cell battery. When the watch stops or runs erratically, it's likely time for a battery change. This should be performed by a qualified watchmaker to avoid damaging the movement.
- **Cleaning**: Keep the movement free from dust and moisture. If the movement requires cleaning, it should be done by a professional watchmaker.
- **Handling**: Always handle the movement with clean, non-magnetic tools and avoid touching the delicate components with bare hands.
Troubleshooting
- **Watch Not Running**:
- Check if the crown is pushed fully into Position 0.
- The battery may be depleted. Replace the battery with a new RENATA 371 (or equivalent).
- **Hands Not Moving/Fitting Correctly**:
- Ensure hands are properly seated on their respective pinions. Sometimes, a specific hand (e.g., minute hand) might require careful alignment or a slightly different fit.
- Verify that the hands are not touching each other or the dial, which can cause them to stop.
- **Date Not Changing**:
- Ensure the time is set correctly, passing midnight for the date to advance.
- Avoid setting the date between 9 PM and 3 AM, as this can interfere with the date change mechanism.
User Tips
- **Pre-installation Check**: Always test the movement upon arrival to ensure it is functioning correctly before proceeding with full installation.
- **Small Parts**: Be mindful of very small components, such as the tiny washer/spring that may be included for the shaft. These are crucial for proper assembly.
- **Protective Strips**: Remember to remove the pre-installed tiny strips that act as temporary hands before mounting your actual watch hands.
- **Hand Compatibility**: When installing hands, ensure they are compatible with the movement's pinion sizes to prevent issues with fitment.
Warranty and Support
For any questions, technical support, or warranty claims regarding your Ronda 515.24H movement, please contact the seller or authorized service center. Keep your purchase records for reference.