Seiko Cal. 6397 - 271

The 6397-271 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6397 caliber with 36j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-0de5688b89a1]

Also known as: Helmet, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1988

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