Seiko Cal. 6690 - 276

The 6690-276 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6690 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-78f96539b75a]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1997

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