Seiko Cal. 6135 - 550

The Seiko 6135-550 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-e11cdf0a1e3d]

Also known as: Crown, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1978

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