390 / SR1130SW Watch Batteries 1.55V

What is a 390 / SR1130SW battery?

A battery 390 is a silver oxide button cell designed for stable voltage output and long service life in low-drain devices. The code SR1130SW describes its chemistry and size: silver oxide, approximately 11.6 mm diameter and 3.1 mm height. Because different manufacturers use different reference numbers, the same type may appear as 390, SR1130SW, SR54 or V390.

Duracell D389 and similar 389 / 390 listings are commonly selected when a watch manual or old battery shows either of these compatible markings. Always check the printed code on your existing cell and confirm the required dimensions before replacement.

How to choose the correct replacement

Before ordering, remove the old battery carefully and read the code stamped on the positive side. If it says 390, SR1130SW, SR54 or V390, the products in this category are designed to match that specification. If your watch lists Swatch battery 390 SR1130SW, select a quality branded cell and make sure the battery compartment contacts are clean and dry.

1. Match the battery code and voltage first.
2. Compare size and thickness with the original cell.
3. Choose a reputable brand for dependable storage life.
4. Install with the correct polarity and avoid touching both sides at once.