Seiko Cal. 6637 - 542

The 6637-542 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-937c4f7096c6]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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