Citizen Super Titanium™ Eco-Drive Bracelet Watch - BM7440-51E
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Product Information
Full details
This guide is for owners of the Citizen Super Titanium™ Eco-Drive Bracelet Watch (BM7440-51E) who want to understand its features and care for it properly. The key benefit is its reliable, light-powered operation, eliminating the need for battery changes. Note that while the watch is durable, it's still susceptible to scratches.
All features
| Series | Super Titanium™ |
|---|---|
| Model Part Number | BM7440-51E |
| Brand | Citizen |
Extended Product Information
FAQs
How does the Eco-Drive technology work?
The Eco-Drive system converts any light source into energy to power the watch. Excess energy is stored in a rechargeable power cell.
How long does the watch run when fully charged?
The watch can run for several months on a full charge, even in darkness. Specific power reserve varies by model, refer to the manual for specific details.
Is the watch water-resistant?
Yes, it is water-resistant. Check the watch case back for the specific water resistance rating (e.g., 100 meters).
How do I clean the watch?
Wipe the watch with a soft, dry cloth. For tougher stains, use a slightly damp cloth.
Can I replace the battery?
No, the watch does not use a traditional battery. It uses a rechargeable power cell that is charged by light.
What kind of light is best for charging the watch?
Any light source will charge the watch. Direct sunlight is the fastest way to charge it, but artificial light also works.
What is Super Titanium™?
Super Titanium™ is a special titanium alloy developed by Citizen. It is exceptionally scratch-resistant and lightweight.
Troubleshooting
Watch stops working.
Expose the watch to light. Eco-Drive watches stop when they are not receiving light for an extended period. Allow the watch to charge in direct sunlight or under a bright light source.
Date is incorrect.
Adjust the date using the crown as described in the Setup section.
Scratches on the watch.
Super Titanium™ is scratch-resistant, but scratches can still occur. Consider professional polishing for deeper scratches. Be careful to avoid knocking the watch against hard surfaces.
Pros and Cons
Pros
- Eco-Drive technology eliminates battery replacement.
- Super Titanium™ is exceptionally durable and lightweight.
- The watch features a classic and versatile design.
- The date indicator adds to the watch's functionality.
- Luminous hands enhance visibility in various lighting conditions.
Cons
- Super Titanium™, while durable, can still be scratched.
- The 38mm case may be small for some.
- Requires exposure to light to maintain charge.
- Some users may prefer a more complex watch design.
Setup, Compatibility & Care
Setting the Time and Date
- Pull the crown out to the first position to set the date.
- Pull the crown out to the second position to set the time.
- Rotate the crown to adjust the date and time accordingly.
- Push the crown back in to secure it.
Compatibility
This watch is designed to be user-friendly with no specific compatibility requirements. It's ready to wear out of the box.
Care Instructions
- Cleaning: Wipe the watch with a soft, dry cloth. For stubborn marks, use a slightly damp cloth.
- Water Resistance: The watch is water-resistant. Avoid prolonged exposure to water (e.g., swimming). Check the watch's water resistance rating to understand its limitations.
- Avoid Harsh Chemicals: Keep the watch away from solvents, detergents, and other harsh chemicals that can damage the finish.
- Charging: Ensure the watch is exposed to light regularly to keep the Eco-Drive system charged. Avoid storing the watch in darkness for extended periods.