Seiko Cal. 5231 - 423

The Seiko 5231-423 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-fe0603584156]

Also known as: Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1968

Related Models

• Seiko 7154-506
• Seiko 6246-825
• Seiko 6280-535
• Seiko 0765-398
• Seiko 5262-967
• Seiko 7022-187
• Seiko 5213-100
• Seiko 6326-939
• Seiko 4592-849
• Seiko 6644-569
• Seiko 6399-986
• Seiko 4449-360