Seiko Cal. 6638 - 778

The Seiko 6638-778 represents an important milestone in Seiko's 1972 lineup. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-b808388aab80]

Also known as: Panda, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1972

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