Seiko Cal. 6645 - 237

The 6645-237 is a sought-after Kinetic piece from Seiko's golden era. With its 22mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-94aeb716ada7]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1983

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