Seiko Cal. 6691 - 730

The Seiko 6691-730 represents an important milestone in Seiko's 1971 lineup. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-18fb4b0930fa]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1971

Related Models

• Seiko 6623-905
• Seiko 0745-622
• Seiko 5246-840
• Seiko 6677-189
• Seiko 6659-332
• Seiko 7154-853
• Seiko 4485-298
• Seiko 5211-288
• Seiko 4510-397
• Seiko 0734-983
• Seiko 5620-667
• Seiko 0777-611