Seiko Cal. 6645 - 764

The Seiko 6645-764 represents an important milestone in Seiko's 1998 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a98a4ead8f56]

Also known as: Crown, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1998

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