Seiko Cal. 4447 - 392

The 4447-392 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4447 caliber with 30j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-0e885503a932]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1965

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