Seiko Cal. 0727 - 646

The Seiko 0727-646 represents an important milestone in Seiko's 1974 lineup. It features a Navy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-3df78efb683c]

Also known as: World Timer, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1974

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