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Seiko Caliber V158

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Manufacturer Seiko
Caliber Number V158, V158A
Type Solar Powered (quartz)
Diameter 28.6mm
Casing Diameter
Total Height
5.8mm (to top of pinion)
32,768 Hz
Integrated Circuit
Capacitor Number 302324Y
Stem 351892 (tap 11)
Hacking Seconds?
Hand Sizes 1.10mm / 0.65mm / 0.20mm
Functions Hours, minutes, central seconds, day and date at 4:00
Country of Manufacture Japan
Known Models SNE109, SNE331, (add more in the comments below…)

The Seiko caliber V158 is found in some Seiko solar-powered watches, including the exclusive Street Series Solar Divers.

V158 VS V158A:

The movement in your timepiece may actually be signed with the caliber number V158A. As with all Seiko movements, the trailing letter indicates the evolution or change-log of the movement, starting with A as the first release. Therefore, V158 is the same as V158A. As of this post, there is not a V158B, V158C, and so on.

V158 VS V157:

There is a similar Seiko caliber V157, with the main difference being that the V157 only has a date window at 3:00, and the V158 has a day/date at 3:00.


Seiko claims that the caliber V158 will maintain accuracy of +/- 15 seconds per month at normal operating temperatures of about 5C to 35C (41F – 140F).

Battery Change:

The caliber V158 is a solar powered watch with a manganese titanium-lithium rechargeable capacitor. It is not a normal battery. The number is MT920, or more specifically: 302324Y. Order one here

Charging Times:

The chart below shows how long different lights sources can take to fully charge the cell in the V158. This ranges from 120 hours to 9 hours of constant light source. A full charge can last up to 10 months.

Please allow us to interrupt your gear turning and caliber learning to say thank you. Thank you for being here! Now, back to the movement..

Seiko Caliber V157 Charging Times

Interesting Note:

Although there is an instruction manual for dive watches with caliber V157 or V158, there is also another instruction manual that combines the following calibers: V110, V111, V114, V115, V116, V137, V145, V147, V157, V158, V181, V182, and V187.

Examples of Watches with V158:

Additional Resources:

  • Seiko official instruction manual is here