SEIKO (SII) NH38/NH39 Balance Complete With Stud #0310184

Product Description

The SEIKO (SII) NH38/NH39 Balance Complete With Stud (0310184) is a genuine Seiko balance assembly for the NH38 and NH39 automatic movements. This complete unit includes the balance wheel, hairspring, and stud, and is factory-assembled in Japan to original Seiko specifications. It is designed for watchmakers to replace a damaged or worn balance during movement servicing or repair.

Features & Function

• Genuine Seiko part – authentic Japanese-made component for NH38 and NH39 movements

• Complete balance assembly – includes balance wheel, hairspring, and stud, ready for installation

• Factory-assembled – assembled to original Seiko specifications for correct timing

• Precision-engineered – manufactured with Seiko’s quality standards for reliable timekeeping

• Direct replacement – drop-in replacement for the original balance assembly

Specifications

• Part Number: 0310184

• Compatible Movements: Seiko NH38, NH39 (also fits NH35, NH36, NH37 variants according to some sources)

• Movement Frequency: 21,600 vibrations per hour (3 Hz)

• Jewels: 24 jewels (NH38/NH39)

• Origin: Japan (Seiko / TMI)

• Condition: Brand new

Applications

• Service and overhaul of Seiko NH38 and NH39 movements

• Balance assembly replacement – replacing damaged, broken, or worn balance wheels and hairsprings

• Timekeeping restoration – restoring correct amplitude and rate to the movement

• Suitable for professional watchmakers and experienced watch repair technicians

FAQs

1. Is this a genuine Seiko / SII part?
Yes, this is a genuine Seiko (TMI) factory part made in Japan. It is not an aftermarket or generic copy.

2. Which movements does this balance complete fit?
It fits NH38 and NH39 movements. Some references indicate compatibility with NH35, NH36, and NH37 as well, but the official parts code 0310197 is listed for NH35-37, while 0310198 is for NH38/39.

3. What is the difference between the balance completes for NH35-37 and NH38-39?
The difference likely relates to the balance geometry associated with the open-heart design of the NH38/NH39 movements.

Why Choose SOFLY Watch Parts?

• Fast worldwide shipping within 3 business days.

• Competitive pricing on Seiko/Hattori calibers.

• 3,000+ watch movements and parts in stock.

• Trusted by watchmakers worldwide.

• Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.