Seiko Cal. 7121 - 880

Released in 1967, the Cal. 7121 with design code 880 was part of Seiko's domestic market collection. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-7debf9ffaacf]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1967

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