Seiko Cal. 7138 - 446

Released in 1974, the Cal. 7138 with design code 446 was part of Seiko's domestic market collection. Powered by the 7138 caliber with 23j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-b092438f7d6f]

Also known as: Helmet, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1974

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