Seiko Cal. 5221 - 727

The 5221-727 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-60b6c2079700]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1973

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