The 377 (SR626SW) is a Silver Oxide battery of 6.8 mm × 2.6 mm rated 1.55V, with a capacity of 24 mAh — related searches include SR626SW · watch · Maxell.
It follows the IEC designations of its size class and is covered by our EU battery information portal declaration under Regulation (EU) 2023/1542.
For your device, match the exact size and voltage printed on the old cell — our engineers confirm the reference and can send samples.
