Seiko Cal. 6657 - 487

Released in 1988, the Cal. 6657 with design code 487 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-790bf71354a6]

Also known as: Turtle, Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1988

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