Seiko Cal. 6636 - 577

Released in 1968, the Cal. 6636 with design code 577 was part of Seiko's domestic market collection. It features a Silver dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-d5bfa0ab299a]

Also known as: Rally, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1968

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