Seiko Cal. 6641 - 577

Released in 1986, the Cal. 6641 with design code 577 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-9497d572ba72]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1986

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