Seiko Cal. 4427 - 161

The 4427-161 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4427 caliber with 33j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-43a3183aa5c3]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1991

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