Seiko Cal. 7155 - 770

The 7155-770 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7155 caliber with 28j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-d744ee8e5348]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1986

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