Seiko Cal. 4438 - 720

The 4438-720 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4438 caliber with 31j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-cbf4f3e4d040]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1965

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