Seiko Cal. 6185 - 550

This Automatic model from 1975 features a 37mm PVD Black case. Powered by the 6185 caliber with 30j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-804170c1728c]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1975

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