Seiko Cal. 7161 - 539

The Seiko 7161-539 represents an important milestone in Seiko's 1991 lineup. Powered by the 7161 caliber with 20j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-84107af418db]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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