Seiko Cal. 4446 - 285

The 4446-285 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4446 caliber with 28j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-9bcc1261ef0a]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1981

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