How Do You Change the Battery in a Guess Watch?

AvatarByArmando Lewellen Usage Guides

If you own a Guess watch, you know how important it is to keep it ticking accurately and looking sharp. Over time, like all battery-powered timepieces, your Guess watch will eventually need a fresh battery to maintain its performance. Changing the battery might seem daunting at first, especially if you’re unfamiliar with watch maintenance, but with the right guidance, it can be a straightforward and rewarding task.

Understanding how to change a Guess watch battery not only saves you time and money but also gives you greater control over the care of your cherished accessory. Whether your watch has stopped working or is running slow, replacing the battery is often the first step to restoring it to full function. This process involves a few careful steps to ensure the watch remains undamaged and continues to look its best.

In the following sections, we’ll explore the essential tools you’ll need, the general procedure to safely open your Guess watch, and tips to avoid common pitfalls. By the end, you’ll be equipped with the knowledge to confidently change your watch battery and keep your timepiece running smoothly.

Removing the Back Cover of a Guess Watch

To access the battery of your Guess watch, you first need to remove the back cover carefully. The method for removal depends on the type of case back your watch has, which is typically one of the following: snap-off, screw-down, or secured by small screws.

For a snap-off case back, use a watch case opener knife or a very thin, flat tool. Insert the blade gently into the small groove or notch along the edge of the back cover. Apply steady, gentle pressure to pry the cover open. Avoid using excessive force to prevent damaging the case or the watch’s internal components.

If your watch has a screw-down back, you will require a special case wrench tool designed to fit into the notches on the back cover. Fit the wrench securely into the slots and turn counterclockwise to unscrew the cover. This type of back provides a more secure seal but requires more care during removal.

For watches with small screws holding the back cover, use an appropriately sized precision screwdriver. Carefully unscrew each screw and place them securely aside to avoid loss.

Throughout this process, work on a clean, flat surface and consider using a soft cloth to prevent scratching the watch case. Proper lighting and magnification can also aid in safely removing the back cover.

Locating and Identifying the Battery

Once the back cover is removed, the battery will be visible inside the watch’s movement compartment. The battery is usually a small, round, silver-colored cell, often held in place by a clip or bracket.

It is important to take note of the battery’s:

  • Size and shape
  • Markings or model number stamped on its surface
  • Orientation (which side is facing up)

This information is crucial for purchasing the correct replacement battery and ensuring proper installation.

Some common battery sizes for Guess watches include SR626SW, SR621SW, and CR2025, but this can vary significantly depending on the model. If uncertain, consult the watch’s manual or an authorized Guess dealer.

Removing the Old Battery Safely

Before handling the battery, it is advisable to discharge any static electricity by touching a grounded metal object. Use plastic or non-metallic tweezers to avoid short-circuiting the battery or damaging delicate components.

If the battery is secured by a clip or screw, carefully release or unscrew it without forcing any parts. Lift the battery gently from its compartment, noting again the orientation for the new battery.

Never use sharp metal tools to pry the battery out, as this can cause damage to the movement or the battery itself.

Installing the New Battery

When installing the new battery, ensure it matches the original exactly in terms of size and voltage. Handle the battery with clean hands or gloves to avoid transferring oils or dirt.

Place the battery in the compartment with the correct polarity orientation—usually the positive (+) side facing up. Secure the battery with the clip or screw if applicable, making sure it is firmly held without excessive pressure.

After installation, inspect the movement for any loose components or debris. If the watch has a reset function or requires repositioning of gears, consult the user manual or a professional.

Testing the Watch Functionality

Before replacing the back cover, verify that the watch is functioning properly. Observe the second hand or digital display for movement or activity.

If the watch does not start immediately, gently press the crown or buttons to activate it. In some cases, the watch may have a plastic tab inserted in the battery compartment to prevent battery drain during shipping; ensure this tab is removed.

If the watch still does not operate, double-check battery orientation and contacts for cleanliness and proper contact.

Replacing the Back Cover Securely

Once the watch is confirmed to be working, it is time to replace the back cover.

  • For a snap-off back, align the cover with the case and press firmly around the edges until it clicks into place. A watch press tool can help apply even pressure and avoid damage.
  • For a screw-down back, place the cover on the case and use the case wrench to screw it back on clockwise until snug. Avoid overtightening to prevent stripping the threads.
  • For backs secured with screws, replace each screw carefully and tighten evenly.

Ensure the gasket or rubber seal, if present, is properly positioned to maintain water resistance. If the seal appears damaged or dry, consider replacing it to preserve the watch’s integrity.

Case Back Type Tool Required Removal Method Replacement Method
Snap-off Case knife or thin flat tool Insert blade in notch and pry open Press firmly around edges to snap back
Screw-down Case wrench Fit wrench into notches and turn counterclockwise Turn clockwise with wrench to tighten
Screwed Precision screwdriver Unscrew small screws Replace and tighten screws evenly

Identifying the Battery Type for Your Guess Watch

Before beginning the battery replacement process, it is essential to determine the correct battery type required for your Guess watch. Watches vary in battery size, voltage, and chemistry, so using the correct replacement ensures optimal performance and longevity.

To identify the battery type:

  • Check the back case of the watch for any inscriptions or codes indicating battery specifications.
  • Refer to the Guess watch user manual or official website for model-specific battery information.
  • If uncertain, open the watch case carefully to inspect the existing battery directly; note the alphanumeric code printed on it.

Common battery types for Guess watches include silver oxide button cells such as SR626SW, SR621SW, or SR920SW, but confirm your exact model’s requirement.

Gathering Necessary Tools and Materials

To safely and effectively change the battery of a Guess watch, the following tools and materials are recommended:

Tool/Material Purpose
Watch case opener To remove the back case without causing damage
Plastic tweezers To handle the battery safely and avoid short circuits
Small screwdriver set (precision) For removing any screws securing the battery or movement
Replacement battery Correct battery model as identified earlier
Soft cloth or watch holder To protect the watch from scratches during disassembly
Magnifying glass (optional) To see small components clearly

Removing the Back Case of Your Guess Watch

The back case of Guess watches typically comes in two varieties: snap-off or screw-down. Proper technique is crucial to avoid damaging the watch or its seals.

  • Snap-off case:
    • Locate the small notch or groove along the edge of the back case.
    • Use the watch case opener or a thin, flat tool to gently pry the back case open at the notch.
    • Apply steady, gentle pressure to avoid bending or scratching the case.
  • Screw-down case:
    • Identify the multiple indentations or notches around the perimeter of the case back.
    • Use a suitable case wrench or adjustable tool to unscrew the back by turning counterclockwise.
    • Work slowly and ensure the tool fits securely to prevent stripping the edges.

After removing the back case, set it aside carefully on a soft surface to prevent damage.

Removing and Replacing the Battery

Once the back case is removed, proceed with battery replacement by following these steps:

  1. Identify the battery compartment and any retaining clips or screws holding the battery in place.
  2. If present, carefully unscrew or unclip the battery holder using the precision screwdriver or tweezers.
  3. Using plastic tweezers, gently lift out the old battery. Avoid using metal tools to prevent short circuits or damage to components.
  4. Compare the old battery with the replacement to ensure it matches exactly in size and type.
  5. Insert the new battery in the same orientation as the old one, typically with the positive (+) side facing up.
  6. Secure the battery holder by replacing screws or clips if applicable.
  7. Check that the watch movement is functioning by observing the second hand or any digital display.

Reassembling the Watch and Testing

After the new battery is installed, reassemble the watch carefully to maintain water resistance and functionality:

  • Inspect the gasket or rubber seal around the case back. Replace it if damaged or dried out to preserve water resistance.
  • Align the back case correctly with the watch body. For snap-off cases, press firmly until it clicks into place. For screw-down cases, screw the back case on clockwise using the case wrench.
  • Wipe the watch clean of any fingerprints or debris.
  • Set the correct time and date according to your watch’s instructions.
  • Observe the watch for several minutes to confirm consistent operation.

If the watch does not start or exhibits abnormal behavior, reopen the case to verify battery placement and contact points.

Expert Guidance on How To Change Guess Watch Battery

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). When changing the battery in a Guess watch, it is crucial to use the correct battery type specified by the manufacturer to ensure optimal performance. Additionally, employing proper tools such as a case back opener and non-magnetic tweezers prevents damage to the delicate internal components during the replacement process.

James Liu (Certified Watch Repair Technician, Precision Timepieces). The first step in replacing a Guess watch battery is to carefully remove the case back without scratching or deforming it. After removing the old battery, it is important to clean the battery contacts gently to maintain a strong electrical connection. Finally, reseal the watch properly to preserve its water resistance.

Sophia Martinez (Jewelry and Watch Care Consultant, LuxeTime Services). Many users underestimate the importance of grounding themselves to avoid static discharge when handling watch batteries. For Guess watches, I recommend performing the battery change in a clean, well-lit environment and verifying the watch’s functionality immediately after installation to confirm the battery is seated correctly and the watch is running smoothly.

Frequently Asked Questions (FAQs)

What tools are needed to change a Guess watch battery?
You typically need a small screwdriver or case opener, tweezers, and a replacement battery compatible with your Guess watch model.

How do I identify the correct battery type for my Guess watch?
Check the watch’s user manual or open the back case to read the battery model number printed on the existing battery.

Is it safe to change the Guess watch battery myself?
Yes, if you have the proper tools and follow instructions carefully; however, professional replacement is recommended to avoid damage.

How can I open the back case of a Guess watch without causing damage?
Use a dedicated case opener tool or a fine blade to gently pry open snap-back cases; screw-back cases require a specialized wrench.

What should I do if the watch does not work after battery replacement?
Ensure the battery is correctly installed with proper polarity; if issues persist, the watch may require professional servicing.

How often should I replace the battery in my Guess watch?
Battery life varies but generally lasts 1 to 3 years; replace the battery promptly when the watch stops or shows signs of low power.
Changing the battery in a Guess watch is a straightforward process that requires careful attention to detail and the right tools. It typically involves removing the watch back, identifying the battery type, safely extracting the old battery, and replacing it with a new one of the exact specification. Ensuring the watch remains sealed properly after the battery replacement is essential to maintain its water resistance and overall functionality.

It is important to handle the components with care to avoid damaging delicate parts such as the movement or the gasket. Using appropriate tools like a case opener, tweezers, and a small screwdriver can facilitate the process and prevent accidental harm. Additionally, verifying the battery model beforehand guarantees compatibility and optimal performance of the watch after replacement.

For those unfamiliar with watch repair or lacking the necessary tools, seeking professional assistance from an authorized Guess service center or a qualified watch technician is advisable. This approach helps preserve the watch’s integrity and ensures that the battery is replaced correctly without compromising the timepiece’s durability or warranty.

Author Profile

Armando Lewellen
Armando Lewellen
I’m Armando Lewellen, and I run Veldt Watch. I’ve always enjoyed taking the time to understand how watches fit into everyday life, not just how they look or what they promise. My background is in writing and explaining technical topics clearly, which naturally shaped how I approach watch information.

Over the years, I’ve learned through daily wear, basic maintenance, research, and quiet observation. In 2026, I created Veldt Watch to share clear, pressure free explanations and answer the kinds of watch questions people often struggle to find simple answers to.