Seiko Cal. 6642 - 320

The 6642-320 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6642 caliber with 31j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-3dab2fe2bcc7]

Also known as: Panda, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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