Seiko Cal. 7161 - 398

The Seiko 7161-398 represents an important milestone in Seiko's 1991 lineup. Powered by the 7161 caliber with 27j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-6aa89e6bbd06]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1991

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