Seiko Cal. 0780 - 309

This Spring Drive model from 1984 features a 37mm PVD Black case. It features a Silver dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-c519a0a4ab32]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1984

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