Seiko Cal. 6677 - 640

The 6677-640 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-2855e0648254]

Also known as: Monster, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1992

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