Seiko Cal. 0721 - 397

The 0721-397 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0721 caliber with 26j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-8a42b5bee433]

Also known as: Samurai, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1987

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