Seiko Cal. 6121 - 947

The Seiko 6121-947 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2fb5ff5fdd05]

Also known as: Sumo, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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