Seiko Cal. 5631 - 821

The Seiko 5631-821 represents an important milestone in Seiko's 1980 lineup. It features a Champagne dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-122c988c3c28]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1980

Related Models

• Seiko 4586-613
• Seiko 5675-702
• Seiko 3883-320
• Seiko 7092-296
• Seiko 4551-826
• Seiko 0736-465
• Seiko 4537-779
• Seiko 4557-648
• Seiko 0738-285
• Seiko 6612-241
• Seiko 7080-408
• Seiko 6250-527