Introduction
This manual provides essential information for the installation, usage, and maintenance of your genuine Casio ProTrek watch case back protector. This accessory is designed to protect the rear casing of compatible Casio ProTrek watches from scratches and wear. Please read these instructions carefully before installation.
Product Overview
The case back protector is a durable resin component designed to fit specific Casio ProTrek watch models. It provides an additional layer of protection against daily wear and tear, preserving the original condition of your watch's case back.

This image displays a single black resin watch case back protector. It features a textured, slightly granular surface for grip and durability. The protector has a curved, rectangular shape designed to fit the contours of a watch case back, with subtle indentations on the sides for secure placement.
Compatibility
This case back protector (MPN: 10353452) is compatible with the following Casio ProTrek watch models:
- PRG-200A-1, PRG-250-1A, PRG-250-1B, PRG-250BD-1
- PRG-260-1, PRG-260-2, PRG-280-1, PRG-280-2
- PRG-500Y-1, PRG-510-1, PRG-550-1A1, PRG-550-1A4, PRG-550-1A9, PRG-550-2, PRG-550BD-1
- PRG-S510-1
- PRW-2000A-1, PRW-2000Y-1, PRW-2500-1A, PRW-2500-1B
- PRW-3500SYT-1, PRW-3500Y-4, PRW-3510-1, PRW-3510FC-1, PRW-3510Y-1, PRW-3510Y-8
- PRW-5000Y-1, PRW-5000YT-1, PRW-5050BN-1, PRW-5100-1, PRW-5100YT-1, PRW-5100YT-1B, PRW-5100YT-1C
Installation Instructions
Follow these steps to properly install the case back protector:
- Prepare the Watch: Ensure the watch case back is clean and free of dust, dirt, or oils. Use a soft, lint-free cloth for cleaning.
- Align the Protector: Carefully align the case back protector with the contours of your watch's rear casing. The protector is designed to fit snugly.
- Apply Pressure: Gently press the protector onto the watch case back, starting from one edge and working your way around to ensure even adhesion and a secure fit.
- Verify Fit: Once installed, check that the protector is firmly attached and does not shift or have any loose edges.
Usage Guidelines
The case back protector is a passive accessory. Once installed, it requires no active operation. It functions by providing a protective barrier. Ensure it remains securely attached during normal use of your watch.
Care and Maintenance
To maintain the effectiveness and appearance of your case back protector:
- Cleaning: Clean the protector with a soft, damp cloth. Avoid harsh chemicals or abrasive materials that could damage the resin.
- Inspection: Periodically inspect the protector for any signs of wear, damage, or loosening. If the protector becomes damaged or loses its secure fit, consider replacing it.
Troubleshooting
If you encounter issues with your case back protector:
- Protector feels loose: Re-check the alignment and apply firm, even pressure to ensure it is fully seated. If it continues to be loose, it may be incompatible with your specific watch model or require replacement.
- Scratches on protector: The protector is designed to absorb wear. Minor scratches are normal and indicate it is performing its function. If deep scratches or damage occur, replacement is recommended.
Specifications
| Attribute | Detail |
|---|---|
| Material | Resin |
| Color | Black |
| Quantity | 2 pieces per set |
| Manufacturer Part Number (MPN) | 10353452 |
Warranty Information
For specific warranty details regarding this product, please refer to the information provided by your original seller or contact the manufacturer directly. Warranty terms may vary based on purchase location and retailer policies.
Customer Support
If you require further assistance, have questions not covered in this manual, or need to report an issue, please contact the seller from whom you purchased this product. Provide your order details and a clear description of your inquiry for prompt support.