Energizer Button Battery, 1.55V, 7.9mm Diameter

The Energizer watch battery uses a silver oxide (Zn/Ag₂O) chemical system, offering a nominal voltage of 1.55 volts and a typical capacity of 23 mAh, tested at a 30K ohm continuous drain at 21°C. It is lightweight at 0.33 grams and compact with a volume of 0.08 cubic centimetres. With an impedance between 45 and 55 ohms at 40 Hz, this battery provides reliable and efficient power, making it suitable for precise and long-lasting watch performance.

Equivalent mercury containing battery range
Long shelf life so they are always ready when you need them
They have been extensively tested so you will never be disappointed