Family: NH21 jewels21,600 vph (6 Hz)
The NH15 is an automatic movement manufactured by Seiko Instruments Inc. It operates at 3Hz (21,600 VpH) and features 21 jewels. As part of Seiko Instruments' in-house NH caliber family, it reflects the company's commitment to domestically produced mechanical movements. The movement remains in production and serves as a base for various Seiko Instruments watches.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
21 jewels
Frequency
21,600 vph (6 Hz)
Display Type
Analog
