Seiko Cal. 4477 - 710

The Seiko 4477-710 represents an important milestone in Seiko's 1969 lineup. It features a White dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-7346f85c0fdc]

Also known as: Helmet, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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