Seiko Cal. 7181 - 819

The Seiko 7181-819 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-4f9420ae1a51]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

Related Models

• Seiko 4561-421
• Seiko 4490-698
• Seiko 3898-907
• Seiko 4570-908
• Seiko 7187-531
• Seiko 6660-643
• Seiko 4566-134
• Seiko 6162-952
• Seiko 4593-558
• Seiko 6627-531
• Seiko 5692-248
• Seiko 4498-126