Seiko Cal. 7172 - 728

The Seiko 7172-728 represents an important milestone in Seiko's 1971 lineup. Powered by the 7172 caliber with 36j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-04171c47505e]

Also known as: Sea Horse, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1971

Related Models

• Seiko 5698-593
• Seiko 7074-888
• Seiko 7187-114
• Seiko 6172-522
• Seiko 6643-838
• Seiko 5224-410
• Seiko 5299-301
• Seiko 6337-945
• Seiko 4495-192
• Seiko 5659-421
• Seiko 6673-781
• Seiko 6699-478