Seiko Cal. 0721 - 521

The 0721-521 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-8fdaa95dbe3b]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1970

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