Seiko Instruments (SII) VH31 / VH31A watch movement | Caliber Corner
: It typically runs for about 2 years on a standard SR920SW battery. Specific Watch Models If you are referring to a specific watch model number: Watch vh211
Most watch enthusiasts searching for this code are likely looking for the Seiko Instruments (SII) VH31 Seiko Instruments (SII) VH31 / VH31A watch movement
: Because it doesn't need a bulky rotor like an automatic, it allows for very slim case designs, often around 3.45mm thick. often around 3.45mm thick.