The Energizer SR57 (395/ 399) is a Silver Oxide Button Cell Battery with Zero Mercury. It has an average output capacity of 51mAh. A variety of watches, toys and calculators use this battery. This silver-oxide battery can be used as a replacement for the following batteries: 280-20, 280-48, 395/399, 399, D395/399, SB-AP, SB-DP, SR57, SR927SW and TR927SW. * Zero Mercury * Ideal for watches and calculators * Long and stable discharge * Nominal voltage 1.55V * Capacity: 51mAh * Dimensions: 9.5(W) x 2.41(D)mm * Weight: 0.8g * Supplied singly * Manufacturer's part: Energizer 635703 https://elecena.pl/product/27890568/energizer-635703-size-sr57-silver-oxide-button-cell 2025-02-22 https://elecena.pl/product/27890568/energizer-635703-size-sr57-silver-oxide-button-cell 2025-07-21