RAYOVAC 370 ( SR920w )

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 51, SR69, SR921,SR920W, AG6(Alkaline cell)

The physical dimensions of this battery are
Diameter 9.5mm x Thickness 2.1 mm