The Energizer SR731 (329) is a Silver Oxide Button Cell Battery with Zero Mercury. It has an average output capacity of 39mAh. The battery will reliably power your watches, toys and calculators. This silver-oxide battery can be used as a replacement for the following batteries: RW300, 24, 525, GS18 and S42. * Zero Mercury * Ideal for watches and calculators * Long and stable discharge * Nominal voltage 1.55V * Capacity: 39mAh * Dimensions: 7.9(W) x 2.8(D)mm * Weight: 0.57g * Supplied singly * Manufacturer's part: Energizer 635318 https://elecena.pl/product/27755461/energizer-635318-size-sr731-silver-oxide-button-cell 2025-01-24 https://elecena.pl/product/27755461/energizer-635318-size-sr731-silver-oxide-button-cell 2025-07-21