Seiko Cal. 6646 - 339

The 6646-339 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6646 caliber with 27j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-d6ca962b8890]

Also known as: Panda, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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