Seiko Cal. 6642 - 257

The Seiko 6642-257 represents an important milestone in Seiko's 1968 lineup. Powered by the 6642 caliber with 24j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-7c391b58d669]

Also known as: Panda

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1968

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