Seiko Cal. 6646 - 388

The Seiko 6646-388 represents an important milestone in Seiko's 1967 lineup. It features a Silver dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-dbcf12db070c]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1967

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