Guide
NH34 vs NH35: The Definitive Comparison
Two of the most important movements in modern enthusiast watches. Here's how they actually compare on the wrist and on the bench.
Quick answer: The NH34 and NH35 share the same base: 24 jewels, 21,600 vph, about 41 hours of reserve and −20 to +40 seconds per day (Seiko's official spec). The difference is the NH34's extra 24-hour GMT hand. Choose the NH35 for a simple three-hander, the NH34 if you track a second time zone.
What's the same
- 24 jewels and 21,600 beats per hour
- About 41 hours of power reserve
- Hacking seconds and hand-winding
- Official accuracy of −20 to +40 seconds per day (Seiko's official spec)
- Same servicing intervals — five to seven years
What's different
The NH34 adds a fourth hand that circles the dial once every 24 hours. You set it independently in crown position 1, which makes it a caller (office) GMT. The NH35 uses that crown position for the date instead.
- NH35: hours, minutes, seconds, date
- NH34: hours, minutes, seconds, date and 24-hour GMT hand
- NH34 is slightly thicker and costs a little more
Which should you choose?
If you travel, work with overseas colleagues or simply like the look of a GMT bezel, the NH34 earns its place. If you want the cleanest, simplest automatic, the NH35 is hard to beat.
Keep exploring
Frequently Asked Questions
Is the NH34 more accurate than the NH35?
No. Both share the same spec of −20 to +40 seconds per day (Seiko's official spec).
Can an NH35 be upgraded to an NH34?
Only by swapping the movement, dial and hands — the GMT hand needs its own dial scale and hand stack.
Is the NH34 a flyer GMT?
No, it is a caller GMT.