Seiko
Seiko NH35A
Swiss lever · introduced 2010
Beat rate
21,600 vph
Power reserve
41h
Jewels
24
Introduced
2010
Escapement
Swiss lever
The NH35A is the movement that made dive-style watches accessible below $500, found in nearly every Seiko 5 Sports and hundreds of OEM watch brands globally. Hand-winding and hacking are rare at the price and make it genuinely functional for a daily-wearer. Collectors do not prize it but do not criticize it; it is simply the baseline from which the category starts.
Specifications
Beats per hour
21,600
Jewels
24
Power reserve
41h
Diameter
27.4mm
Height
5.34mm
Escapement
Swiss lever
Introduced
2010
Finishing
Industrial
Service interval
3 years
Service cost tier
Entry
Complications
datequicksethand windinghacking
Known service issues
- Rotor click spring wear is common by 5-7 years; replacement is inexpensive
- Accuracy degrades more than higher-tier movements when the wearer is sedentary
Notable in
- Seiko 5 Sports SRPD63
- Seiko 5 Sports SKX Successor SRPE series
- Many OEM and private-label dive watches
Buying advice
Practical guides for buying a watch with this caliber on the pre-owned market: