Seiko Cal. 6657 - 615

The 6657-615 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-aa4eee2eca21]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1971

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