Seiko Cal. 0737 - 878

This Quartz model from 1970 features a 39mm Two-Tone case. Powered by the 0737 caliber with 26j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-f73ac022d7b0]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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