Seiko Cal. 6381 - 570

The 6381-570 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6381 caliber with 17j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-eab252134c51]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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