Seiko Cal. 6231 - 791

The Seiko 6231-791 represents an important milestone in Seiko's 1987 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-bf13babab6ca]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1987

Related Models

• Seiko 6672-379
• Seiko 6697-358
• Seiko 7120-384
• Seiko 7171-769
• Seiko 6257-691
• Seiko 7067-782
• Seiko 7165-586
• Seiko 5250-176
• Seiko 6626-892
• Seiko 7120-156
• Seiko 7189-665
• Seiko 3862-165