Seiko Cal. 7187 - 438

Released in 1974, the Cal. 7187 with design code 438 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-2cf020673ecd]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1974

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