Seiko Cal. 4428 - 771

The Seiko 4428-771 represents an important milestone in Seiko's 1970 lineup. It features a Cream dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-2eb1cee2bf91]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1970

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