Seiko Cal. 7157 - 743

Released in 1968, the Cal. 7157 with design code 743 was part of Seiko's domestic market collection. Powered by the 7157 caliber with 25j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-8fa1bdccc201]

Also known as: Monster, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1968

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