Seiko Mod Guide

Seiko 6R35 vs 4R36 & NH35: Which Movement Is Better?

Seiko 6R35 vs 4R36 & NH35: Which Movement Is Better?

Seiko 6R35 vs 4R36 vs NH35 comparison: 70hr vs 41hr power reserve, accuracy, reliability. Which movement is worth it for your watch? Complete buying guide.

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Seiko 6R15 vs 6R35 Movement: Key Differences Explained

Seiko 6R15 vs 6R35 Movement: Key Differences Explained

Comprehensive comparison of Seiko 6R15 vs 6R35 movements. Learn the key differences in power reserve, accuracy, and which caliber is right for your watch collection.

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Seiko NH34 vs NH37: Complete GMT Movement Comparison Guide

Seiko NH34 vs NH37: Complete GMT Movement Comparison Guide

The NH34 features a caller GMT (jumping hour hand), while the NH37 provides a true GMT (jumping GMT hand) configuration.

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Seiko NH35 vs Miyota 9015: Complete Movement Comparison Guide

Seiko NH35 vs Miyota 9015: Complete Movement Comparison Guide

NH35 vs Miyota 9015 comparison: Learn differences in beat rate, thickness, accuracy, price, and modding support. Complete specs breakdown, pros/cons, and which Japanese automatic movement is right for your watch. Expert guide.

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