Seiko Cal. 6637 - 209

The 6637-209 is a sought-after Kinetic piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-8d951a91a70b]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1987

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