Seiko Cal. 6678 - 787

The 6678-787 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6678 caliber with 36j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-afba4bbc61d1]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1982

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