Seiko Cal. 6370 - 664

The 6370-664 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6370 caliber with 19j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-b9df10e3498b]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1988

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