Seiko Cal. 5631 - 621

The Seiko 5631-621 represents an important milestone in Seiko's 1996 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-ec09b063e178]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1996

Related Models

• Seiko 4434-760
• Seiko 4583-451
• Seiko 5659-614
• Seiko 7180-603
• Seiko 3817-257
• Seiko 3835-792
• Seiko 0772-968
• Seiko 4497-797
• Seiko 5683-138
• Seiko 6147-144
• Seiko 6244-880
• Seiko 6161-164