You can replace most Bulova watch batteries yourself with basic tools and about 15 minutes

Most Bulova watches use a standard battery that you can swap out at home without special training. The process involves opening the case back, removing the old battery, and installing a new one—all with tools you probably already own. If your Bulova is water-resistant or has a sealed case back, a jeweler or Bulova service center is the safer choice, but for standard models, this is a straightforward task.

The entire job requires only three tools: a case-back opener, a small flathead screwdriver, and tweezers. Most watch battery kits sold online or at jewelry supply stores include all three for under $20, and the battery itself costs $3 to $10. Once you have the tools and the correct battery type, you can complete the replacement without damaging your watch.

Key Takeaways

  • Bulova watches typically use coin-cell batteries (usually SR or similar types) that cost between $3 and $10 and are sold at drugstores, hardware stores, and online retailers.
  • You will need a case-back opener tool (a small flat tool designed for watches), a small flathead screwdriver, and tweezers—many watch battery kits include all three for under $15.
  • The case back is usually held by a screw or a snap ring; identify which type yours has before you start, because the removal method is different for each.
  • Water-resistant Bulova watches and models with sealed case backs should be serviced by a jeweler or Bulova service center to avoid damaging the water seal.
  • After you install the new battery, test the watch before closing the case back to confirm it is working.

Identify your Bulova model and case-back type

Before you buy tools or a battery, look at the back of your watch. The case back is either held in place by a small screw or by a snap ring (a metal band that sits in a groove). Screw-back case backs are more common on older Bulova models and dress watches. Snap-ring case backs are typical on sports watches and newer models. You can usually tell the difference by looking: a screw-back has a visible screw or screw slot; a snap-ring has a smooth metal band with a small notch or groove all the way around.

Check the watch dial or the case back itself for water-resistance markings. If it says "water-resistant," "water-proof," "50M," "100M," or any similar notation, the case back is sealed and should not be opened at home. Opening a sealed case back can break the water seal and damage the movement. Take it to a jeweler or a Bulova service center instead.

Gather the right tools and battery type

You need three things: a case-back opener, a small flathead screwdriver, and tweezers. A case-back opener is a small flat tool with a notch or slot designed to fit into the grooves on a snap-ring case back or to turn a screw-back. You can buy a watch battery replacement kit online or at a jewelry supply store for $10 to $20; most kits include all three tools plus several common battery types. If you already have a small flathead screwdriver and tweezers at home, you only need to buy the case-back opener.

Next, identify the battery type your Bulova uses. Look inside the case back if you can see through it, or check the Bulova model number on the dial or case back and search for the manual or battery specification online. Bulova watches most commonly use SR batteries (silver-oxide, also called button cells)—typically SR626, SR927, SR920, or SR936. Write down the exact type before you shop. You can buy the correct battery at a pharmacy, drugstore, hardware store, or online; they usually cost $3 to $10.

Remove the case back on a screw-back watch

Place the watch face-down on a soft cloth or towel to protect the crystal. Locate the screw on the case back. Use the small flathead screwdriver to turn the screw counterclockwise (left) until it comes free. Keep the screw in a safe place—it is small and straightforward to lose. Gently lift the case back away from the watch body.

If the screw is stuck or very tight, do not force it. explore a tiny drop of penetrating oil (like WD-40) around the screw head, wait a few minutes, and try again. Forcing a stuck screw can strip it or damage the case back. Once the screw is loose, the case back should lift away easily.

Remove the case back on a snap-ring watch

Place the watch face-down on a soft cloth. Look at the case back and find the small notch or groove in the metal band around the edge. The case-back opener tool has a small notch or slot on one end designed to fit into this groove. Insert the notch of the opener into the groove on the case back, then gently twist the opener counterclockwise (left) to loosen the snap ring. You may need to explore steady pressure rather than force.

Once the snap ring is loose enough, you can usually lift it away by hand or with the opener. Set it aside in a safe place. The case back will then lift away from the watch body. If the snap ring feels stuck, explore a small amount of penetrating oil and wait a few minutes before trying again.

Swap the battery and test the watch

Inside the case, you will see the battery sitting in a small compartment, usually held in place by a metal contact or a small clip. Use the tweezers to gently lift the old battery out. Note which side was facing up (the positive or negative side). The new battery must go in the same way.

Before you close the case back, place the new battery in the same position and press it gently into place. Pick up the watch and listen for a ticking sound, or look at the second hand to see if it is moving. If the watch does not work, the battery may be installed upside down. Flip it and test again. Once the watch is running, you can close the case back.

Close the case back securely

For a screw-back, align the case back with the watch body and insert the screw. Turn it clockwise (right) with the flathead screwdriver until it is snug. Do not over-tighten; you only need enough pressure to hold the case back in place. A screw that is too tight can crack the case back or strip the threads.

For a snap-ring, align the case back with the watch body and position the snap ring in its groove. Use the case-back opener tool to turn the snap ring clockwise (right) until it is tight. Again, snug is the goal—you do not need to force it. Once closed, the watch should feel solid and the case back should not move or rattle.

When to take your Bulova to a professional

If your watch is water-resistant or has a sealed case back, take it to a jeweler or Bulova service center. These professionals have the tools to open the watch without breaking the water seal and can re-seal it properly after the battery is replaced. The cost is usually $15 to $40, depending on the jeweler and the model.

If you are uncomfortable opening the case back, if the screw or snap ring is stuck or damaged, or if the watch does not work after you install the new battery, stop and take it to a professional. Forcing a stuck component or continuing to troubleshoot can cause more damage than the original problem. A jeweler can diagnose whether the issue is the battery, the movement, or something else.

Frequently Asked Questions

How long does a Bulova watch battery last?

Most Bulova watch batteries last between two and five years, depending on the model and how often you wear the watch. Watches worn daily typically drain the battery faster than those worn occasionally. If your Bulova stops working suddenly, a dead battery is the most common cause.

What if I drop the battery or the screw while replacing it?

Work over a towel or a small tray to catch small parts. If you drop the battery, pick it up and wipe it dry before installing it. If you drop the screw or snap ring, mark the spot and search carefully—they are small but usually findable. If you lose a screw, a jeweler can replace it with a matching one for a few dollars.

Can I use any SR battery, or does it have to be the exact model number?

The exact model number matters. An SR626 and an SR927 are different sizes and voltages, and using the wrong one can damage the watch movement or cause it to run incorrectly. Always match the battery type to what your Bulova manual or case back specifies.

Do I need to do anything special after replacing the battery?

No. Once the watch is running and the case back is closed, you are done. Wear it normally. If you replaced the battery because the watch had stopped, it should now keep accurate time. If it does not, the movement may have a separate issue and a jeweler should inspect it.

Is it safe to replace the battery if I have never done it before?

Yes, as long as your watch is not water-resistant. Take your time, work over a soft surface, and follow the steps in order. The most common mistake is installing the battery upside down, which is straightforward to fix by flipping it. If you feel unsure at any point, a jeweler can do it for $15 to $30.