Seiko Cal. 4539 - 677

The Seiko 4539-677 represents an important milestone in Seiko's 1985 lineup. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-42248f1dc733]

Also known as: World Timer, Sea Horse

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1985

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