Seiko Cal. 6637 - 766

The 6637-766 is a sought-after Kinetic piece from Seiko's golden era. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-61ab560eb753]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1997

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