Seiko Cal. 6661 - 770

The 6661-770 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6661 caliber with 35j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-fc489dae9ac5]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1970

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