Seiko Cal. 3837 - 815

Released in 1987, the Cal. 3837 with design code 815 was part of Seiko's domestic market collection. Powered by the 3837 caliber with 18j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-ed59bba57b36]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1987

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