Seiko Cal. 7155 - 551

The 7155-551 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-494ee3ba7c31]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1977

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