Seiko Cal. 6691 - 361

This Solar model from 1988 features a 39mm Gold-Plated case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-e56b591cc561]

Also known as: Sumo, Bullhead

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1988

Related Models

• Seiko 5211-430
• Seiko 5644-968
• Seiko 5262-658
• Seiko 7110-986
• Seiko 6334-345
• Seiko 5662-207
• Seiko 4489-638
• Seiko 5233-154
• Seiko 4568-550
• Seiko 4416-460
• Seiko 5624-503
• Seiko 6161-643