Seiko Cal. 5631 - 962

The 5631-962 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5631 caliber with 31j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-2172efc331d7]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1980

Related Models

• Seiko 5254-819
• Seiko 7174-972
• Seiko 4532-852
• Seiko 6636-305
• Seiko 6129-713
• Seiko 5696-880
• Seiko 6385-415
• Seiko 4532-609
• Seiko 3821-191
• Seiko 7017-169
• Seiko 7141-842
• Seiko 5620-929