Seiko Cal. 6657 - 452

Released in 1989, the Cal. 6657 with design code 452 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-902c061ae4f9]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1989

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