RAYOVAC 364 ( SR621sw )

Recognised as one of the largest and most trusted of battery manufacturers,

Rayovac watch batteries are chosen by watch professionals the world over

This battery is a direct replacement for the following battery numbers..
Citizen 34, SR60, SR621SW, AG1(alkaline cell)

The physical dimensions of this battery are
Diameter 6.8 mm x Thickness 2.1 mm