Seiko Cal. 6157 - 737

Released in 1965, the Cal. 6157 with design code 737 was part of Seiko's domestic market collection. Powered by the 6157 caliber with 21j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-1e8ca39ca276]

Also known as: Tuna, World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1965

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