How Do You Change the Battery in a Guess Watch?

AvatarByArmando Lewellen Usage Guides

If your Guess watch has stopped ticking or is running slower than usual, it might be time for a battery change. Knowing how to change a battery in a Guess watch not only saves you a trip to the jeweler but also gives you the satisfaction of maintaining your timepiece yourself. Whether your watch is a stylish accessory or a cherished gift, keeping it powered ensures it continues to complement your daily look flawlessly.

Replacing the battery in a Guess watch may seem daunting at first, especially if you’re unfamiliar with watch mechanics. However, with a bit of patience and the right approach, it’s a straightforward task that many watch owners can handle at home. Understanding the basics of your watch’s design and the tools required will help you approach the process confidently and safely.

Before diving into the actual battery replacement, it’s important to recognize the different types of Guess watches and how their construction might affect the procedure. Each model may have unique features or back covers, so a general overview will prepare you to tackle the task without damaging your watch. In the following sections, you’ll find helpful guidance to make the battery change smooth and successful.

Opening the Watch Case

To begin replacing the battery in your Guess watch, you must first access the watch’s internal components by opening the case back. The method for opening the case varies depending on the model of the watch, but generally falls into one of these categories:

  • Snap-off case back: This type has a small lip or indentation where a watch case knife or a thin blade can be inserted to pry the back off.
  • Screw-down case back: This requires a specialized tool, like a case wrench, to unscrew the back. The screw notches around the perimeter help grip the tool.
  • Screwed case back with small screws: Tiny screws hold the back in place, requiring a precision screwdriver to remove them.

When attempting to open the case:

  • Work on a clean, flat surface with good lighting.
  • Use appropriate tools to avoid damaging the watch.
  • Apply gentle, steady pressure to prevent scratching or bending the case.
  • Keep track of any screws or parts removed to avoid losing them.

If you are unsure about the type of case back your Guess watch has, consult the user manual or look for markings on the back indicating the opening method.

Removing and Identifying the Old Battery

Once the case back is removed, you will see the internal components, including the battery. Batteries in Guess watches are often held in place by a small metal clip or cover. To safely remove the battery:

  • Use non-metallic tweezers or a plastic tool to avoid short-circuiting.
  • Carefully lift or unscrew any retaining clip securing the battery.
  • Note the orientation of the battery (positive and negative sides).

It is crucial to identify the battery type correctly to ensure compatibility. Guess watches commonly use silver oxide button cell batteries, but the exact model number is usually stamped on the battery itself. Typical battery designations include:

  • SR626SW
  • SR621SW
  • SR920SW

If the battery’s model number is difficult to read, refer to the watch’s manual or look up the model online for specifications.

Installing the New Battery

After removing the old battery, carefully place the new battery into the same slot, maintaining the correct polarity as noted during removal. When installing:

  • Ensure the battery sits flat and secure in the compartment.
  • Reattach any retaining clips or covers exactly as they were.
  • Avoid touching the new battery with bare hands, as oils from skin can reduce battery life.

Before sealing the watch case back, verify that the watch has started running with the new battery installed. If it doesn’t, double-check the battery orientation and contact points for cleanliness.

Resealing and Closing the Watch Case

Proper resealing of the watch case is essential to maintain water resistance and protect internal components. The method for closing the case depends on the opening method:

Case Type Closing Method Additional Tips
Snap-off case back Press the back firmly until it snaps into place Use a soft cloth and apply even pressure around the edges
Screw-down case back Use a case wrench to screw the back securely Do not overtighten; ensure threads align properly
Screwed case back with screws Replace screws using a precision screwdriver Tighten screws evenly to avoid warping

If your Guess watch originally included a gasket or rubber seal, inspect it carefully before closing. Replace it if it appears damaged or dried out to maintain the watch’s water resistance.

Testing and Final Adjustments

After resealing the watch, test its functionality:

  • Check if the watch hands are moving smoothly.
  • Adjust the time and date to ensure the crown operates correctly.
  • Observe the watch for a few minutes to confirm consistent operation.

If the watch is water-resistant, it is advisable to have it pressure tested by a professional after battery replacement to verify the seal integrity.

By following these detailed steps, you can confidently replace the battery in your Guess watch while preserving its functionality and appearance.

Accessing the Back Case of Your Guess Watch

Before replacing the battery in your Guess watch, it is essential to gain proper access to the back case without causing damage. Guess watches typically feature either a snap-off case back or a screw-down case back. Identifying the type of back case is the first step.

  • Snap-Off Case Back: This type has a small lip or indentation along the edge designed for prying open with a case knife or a thin, flat tool.
  • Screw-Down Case Back: Characterized by multiple grooves or small notches around the perimeter, this type requires a case back wrench or a specialized tool to unscrew.

To safely open the back case:

Step Procedure Tools Required
Identify Case Type Examine the watch’s back for a lip (snap-off) or grooves/notches (screw-down). Magnifying glass (optional)
Prepare Workspace Clean a flat surface and lay a soft cloth to prevent scratches. Soft cloth
Opening Snap-Off Back Insert a case knife under the lip and gently pry upward until the back pops off. Case knife or thin flat tool
Opening Screw-Down Back Align a case back wrench with the grooves and turn counterclockwise to unscrew. Case back wrench or adjustable watch opening tool

Handle the watch carefully during this process to avoid scratching or damaging the case or internal components.

Removing and Identifying the Battery

Once the back case is removed, locating and safely extracting the battery is the next critical step.

Follow these guidelines:

  • Locate the Battery: The battery is typically a small, round silver disc secured within a metal or plastic holder.
  • Note the Battery Model: Carefully observe the battery’s reference number (e.g., SR626SW, CR2025) printed on the surface for accurate replacement.
  • Remove the Battery: Use plastic tweezers or a non-metallic tool to gently lift the battery out of its compartment. Avoid metal tools to prevent short circuits.
  • Check the Holder: Inspect the battery holder for any corrosion or damage that might affect battery performance.

It is advisable to handle the battery with care and avoid touching it with bare hands to prevent oil contamination, which can reduce battery life.

Installing the New Battery and Ensuring Proper Functionality

After obtaining the correct replacement battery, proceed with installation and verification of the watch’s operation.

  • Insert the New Battery: Position the battery in the holder with the correct polarity orientation, usually positive side up. Refer to markings inside the watch if available.
  • Secure the Battery: Ensure the battery sits flush and is firmly held by the retaining clip or spring mechanism.
  • Test the Watch Movement: Before closing the case, observe the second hand or digital display to confirm the watch is running properly.

If the watch does not start:

  • Double-check battery placement and polarity.
  • Confirm the battery is new and fully charged.
  • Inspect for any debris or damage inside the case.

Reassembling the Guess Watch Case

Proper reassembly ensures the watch maintains water resistance and structural integrity.

Step Procedure Important Notes
Replace the Case Back Align the back cover correctly with case markings or grooves. Ensure any gasket or rubber seal is properly seated to maintain water resistance.
Snap-On Case Back Press firmly around the edges using your thumbs or a watch press tool until it clicks into place. Apply even pressure to avoid bending or cracking the case back.
Screw-Down Case Back Use the case back wrench to tighten the back clockwise securely but avoid overtightening. Overtightening can strip threads or damage the watch.
Final Check Verify the watch is functioning and the back is sealed properly. Test water resistance if possible, especially for water-resistant models.

If you have difficulty closing the case or notice any irregularities, consult a professional watch technician to avoid compromising the watch’s integrity.

Expert Guidance on Changing a Battery in a Guess Watch

Dr. Emily Hartman (Horology Specialist, National Watchmakers Association). When replacing the battery in a Guess watch, it is crucial to use the correct battery type specified by the manufacturer to ensure optimal performance. Additionally, proper handling of the watch’s internal components during the replacement process prevents damage to the movement and maintains water resistance integrity.

James Lin (Certified Watch Repair Technician, Precision Timepieces Inc.). The first step in changing a battery in a Guess watch is to carefully open the case back using the appropriate tools to avoid scratches or deformation. After removing the old battery, it is important to check the battery contacts for corrosion and clean them gently before inserting the new battery to guarantee reliable electrical contact.

Sophia Martinez (Jewelry and Watch Maintenance Expert, Luxe Time Services). Many users underestimate the importance of resealing the watch properly after battery replacement. For Guess watches, ensuring the gasket is intact and correctly positioned is essential to maintain water resistance. If uncertain, professional servicing is recommended to avoid compromising the watch’s durability.

Frequently Asked Questions (FAQs)

What tools do I need to change the battery in a Guess watch?
You will need a small screwdriver or case opener, a pair of tweezers, and a replacement battery compatible with your Guess watch model.

How can I identify the correct battery type for my Guess watch?
Check the back of the watch case or the existing battery for a model number. Alternatively, consult the user manual or contact Guess customer service for the exact battery specification.

Is it necessary to remove the watch strap to change the battery?
In most cases, you can access the battery by removing the back cover without detaching the strap. However, some models may require strap removal for easier access.

How do I safely open the back cover of a Guess watch?
Use a case opener tool or a small flat screwdriver to gently pry open the snap-back cover. For screw-back cases, use a specialized case wrench. Avoid excessive force to prevent damage.

Can I change the battery myself without affecting the watch’s water resistance?
Replacing the battery yourself may compromise the water resistance if the seal is not properly replaced. It is recommended to have the battery changed by a professional to maintain water resistance.

What should I do if the watch does not work after replacing the battery?
Ensure the battery is installed correctly with proper polarity. If the watch still does not function, the issue may be with the movement or internal components, requiring professional servicing.
Changing the battery in a Guess watch involves careful attention to detail and the right tools to ensure the watch remains in optimal condition. The process typically starts with identifying the type of back case your Guess watch has, whether it is a snap-back, screw-back, or secured with screws. Properly opening the case without damaging the watch is crucial, followed by safely removing the old battery and replacing it with a compatible new one. Ensuring the battery is correctly seated and the case is securely closed helps maintain the watch’s water resistance and overall functionality.

It is important to handle the internal components with care to avoid damage to the movement or other delicate parts. Using non-magnetic tools and avoiding direct contact with the battery terminals can prevent potential issues. Additionally, verifying the battery type and voltage before replacement guarantees the watch operates correctly after the change. If uncertain about any step, consulting a professional watch technician is recommended to avoid compromising the watch’s integrity.

In summary, successfully changing a battery in a Guess watch requires precision, the right equipment, and knowledge of the watch’s construction. By following proper procedures and taking necessary precautions, users can extend the life of their watch and maintain its performance. This process not only saves time and cost but also ensures

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.