Seiko Cal. 6678 - 523

The 6678-523 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-b890531ddf47]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1990

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