364 SR621SW Watch Batteries 1.55V

Choose the right 364 watch battery

The 364 watch battery is a small but essential 1.55V silver oxide button cell used in many analogue watches and precision miniature devices. It is commonly marked as SR621SW, and depending on the manufacturer you may also see equivalent codes such as V364, SR60 or D364. In this category you can find trusted options from Energizer, Varta and Duracell, all selected for stable voltage, dependable performance and easy replacement.

What does SR621SW mean?

SR621SW is the technical code for this silver oxide watch cell. The “SR” designation indicates silver oxide chemistry, while the size code refers to the cell dimensions. For most watch owners, the important point is simple: if your old battery is marked 364 or SR621SW, this category contains compatible replacements.

• Voltage: 1.55V for consistent watch operation.
• Chemistry: silver oxide, preferred for precision timepieces.
• Common labels: 364, SR621SW, V364, SR60, D364.

Why choose branded 364 batteries?

A watch battery works in a very small space, so quality matters. Premium manufacturers such as Varta, Duracell and Energizer design their 364 cells to deliver stable output over time, helping the watch movement keep accurate time. This is especially important for everyday watches, dress watches and devices where low, steady current is required.

When comparing products, check the code printed on the old cell or in the watch manual. A Varta V364, Duracell D364 or Energizer 364 can all be suitable when SR621SW compatibility is specified.

How to replace a 364 battery safely

Before replacing the battery, place the watch on a clean, soft surface and avoid touching the new cell with wet or greasy fingers. If the back cover is difficult to open, or if the watch has a water-resistance seal, professional fitting may be the safer option. Incorrect installation can damage the movement, gasket or battery contacts.

1. Match the old battery code with 364, SR621SW or an equivalent marking.
2. Insert the new cell with the correct polarity, usually the positive side facing up.
3. Check that the contact springs sit correctly and the watch starts running.
4. Dispose of the old button cell responsibly and keep batteries away from children.

Order 364 SR621SW batteries online

Whether you are replacing a single watch cell or keeping a spare at home, this selection makes it easy to buy the correct 364 battery online. Choose the brand you prefer, confirm the equivalent code, and enjoy reliable 1.55V power for compatible watches. Batterymarket.bg offers convenient ordering and fast delivery in Bulgaria, so your watch can be back in service without delay.

Tip: If the old cell is labelled 364, SR621SW, V364, SR60 or D364, you are in the right category.