Ronda Caliber 4120.B
|Caliber Number||Ronda 4120.B|
|Size||12 1/2”’ x 4.40mm thick|
|Jewels||7 or 3|
|Battery Cell Number||395|
|Claimed Battery Life||50 months|
|Hands||.20 x .90 x .150|
|Functions||Hours, minutes, small seconds, alarm, big date|
||Swiss parts, assembled in unknown (comment below)|
||Invicta Russian Diver III|
According to the Ronda website, there are two versions of this caliber 4120.B quartz movement: a Swiss parts version with 3 jewels and nickel plated finish, and a Swiss Made 7 jewel version with gold plated finish (above). It also has a power saving mechanism with pulled out stem: Reduction of consumption approximately 70%.
Ronda states that this is a repairable metal watch movement, however, if you need to replace it the prices online range from $48.95 (Swiss parts) to $66.95 (Swiss made) at the time of this post.