Seiko Cal. 4539 - 488

The Seiko 4539-488 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-a5a6068c7ec1]

Also known as: Tuna, Helmet

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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