Seiko Cal. 7186 - 644

The 7186-644 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7186 caliber with 36j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-f1580b8e3410]

Also known as: Tuna, UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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