Seiko Cal. 0778 - 731

This Spring Drive model from 1986 features a 37mm PVD Black case. Powered by the 0778 caliber with 29j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-289e7c210caf]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1986

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