Seiko Cal. 4528 - 689

The Seiko 4528-689 represents an important milestone in Seiko's 1987 lineup. Powered by the 4528 caliber with 27j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-7758f34275a4]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1987

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