Seiko Cal. 6171 - 728

The 6171-728 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6171 caliber with 17j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-c2ff7f18c351]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1995

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