Seiko Cal. 6656 - 818

The 6656-818 is a sought-after Solar piece from Seiko's golden era. Powered by the 6656 caliber with 32j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-f9aa63bff989]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

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