Seiko Cal. 0740 - 641

The Seiko 0740-641 represents an important milestone in Seiko's 1973 lineup. It features a White dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-1ed3ca13a4fe]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1973

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