Seiko Cal. 6637 - 694

The Seiko 6637-694 represents an important milestone in Seiko's 1989 lineup. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-0e23e53ba18e]

Also known as: UFO, Rally

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1989

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