Seiko Cal. 6658 - 887

The 6658-887 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6658 caliber with 25j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-3f66375b16ae]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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