Seiko Cal. 4528 - 991

The Seiko 4528-991 represents an important milestone in Seiko's 1966 lineup. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-23fc07b06c11]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1966

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