Seiko Cal. 5642 - 343

The Seiko 5642-343 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-05ac844ddc70]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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