Seiko Cal. 0740 - 644

The Seiko 0740-644 represents an important milestone in Seiko's 1997 lineup. It features a White dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-9e16ba6d4298]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1997

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