Seiko Cal. 5621 - 633

The 5621-633 is a sought-after Solar piece from Seiko's golden era. Powered by the 5621 caliber with 21j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-a8c35bf78273]

Also known as: Turtle

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1985

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