Seiko Cal. 6690 - 278

The 6690-278 is a sought-after Solar piece from Seiko's golden era. Powered by the 6690 caliber with 25j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-1eca7d9fe054]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1981

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