Seiko Cal. 0722 - 644

The Seiko 0722-644 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-83ae23be1658]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1971

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