Seiko Cal. 6637 - 823

The 6637-823 is a sought-after Kinetic piece from Seiko's golden era. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ffe3aa98c974]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1994

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