Seiko Cal. 5634 - 528

The 5634-528 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5634 caliber with 23j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-3c62bf56c443]

Also known as: Sumo, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1987

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