Seiko Cal. 6188 - 438

Released in 1988, the Cal. 6188 with design code 438 was part of Seiko's domestic market collection. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-5b74dc356add]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1988

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