Seiko Cal. 6171 - 721

This Hand-Winding model from 1998 features a 38mm Two-Tone case. Powered by the 6171 caliber with 27j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-b4cdcf871365]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1998

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