Seiko Cal. 0721 - 501

The 0721-501 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-606c3edfaadd]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1966

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