Varta 361 SR721W Watch Batteries

361 Watch Battery for Precise Everyday Timekeeping

The 361 watch battery, also known as SR721W, is a compact silver oxide button cell designed for selected wristwatches and small precision electronics. In this category you will find the Watch Battery SR721W - Varta 361 - 1.55V, a dependable choice for customers who want stable voltage, accurate performance and easy replacement of a compatible watch cell.

Why choose Varta 361 SR721W?

Varta is a well-known battery brand trusted for consistent manufacturing quality. The 361 SR721W format provides 1.55V silver oxide power, which helps maintain a steady output over the useful life of the battery. This is especially important for watches, where reliable voltage supports accurate movement and reduces the risk of irregular timekeeping caused by weak or unstable cells.

Compatibility and correct replacement

Before ordering a new battery, always check the code printed on your old cell or in the watch manual. The marking may appear as 361, SR721W or another equivalent code depending on the manufacturer. The physical size and chemistry must match the requirements of your watch movement. If your watch originally uses a 361 or SR721W battery, this Varta 1.55V cell is intended to be a suitable replacement.

It is also important to distinguish between similar-looking button batteries. Many watch cells have nearly identical diameters and heights, but even a small difference can affect contact pressure, case closure or device performance. When replacing the battery, handle the cell with clean, dry fingers or plastic tweezers, avoid short-circuiting the contacts, and make sure the positive and negative sides are positioned exactly as indicated inside the watch.

Benefits of silver oxide watch batteries

• Stable 1.55V output for dependable watch movement operation.
• Compact SR721W size for compatible slim watches and miniature devices.
• Recognised Varta quality for confidence in everyday use.
• Convenient replacement when the original battery code is 361 or SR721W.

Silver oxide batteries are commonly preferred for watches because they deliver a flatter discharge curve than many alkaline button cells. This means the voltage remains more consistent for longer, helping the watch run accurately until the battery approaches the end of its service life. For a timepiece you wear daily, choosing the correct silver oxide replacement can make a noticeable difference in reliability.

Order 361 watch batteries online

BatteryMarket makes it easy to buy the correct Varta 361 watch battery online. This category is focused on the SR721W / 361 format, so you can quickly identify the right option without browsing through unrelated sizes. Add the battery to your cart, complete your order and keep your compatible watch ready for use.

Tip: If your watch stopped suddenly or runs inconsistently, replacing the old cell with a fresh 361 SR721W battery is often the fastest first step before looking for more complex service issues.

For best results, store spare watch batteries in a cool, dry place, away from metal objects and out of reach of children. Do not mix old and new cells, and recycle used batteries responsibly according to local regulations.