Seiko Cal. 7181 - 739

This Hand-Winding model from 1971 features a 35mm Stainless Steel case. Powered by the 7181 caliber with 29j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-ee5e01926da0]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1971

Related Models

• Seiko 4565-995
• Seiko 7020-146
• Seiko 5261-866
• Seiko 6666-955
• Seiko 7059-828
• Seiko 6368-868
• Seiko 7143-703
• Seiko 0792-598
• Seiko 3849-236
• Seiko 5632-818
• Seiko 0787-374
• Seiko 3889-633