Seiko Cal. 7122 - 487

The Seiko 7122-487 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-233172162d87]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

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