Seiko Cal. 4439 - 551

The 4439-551 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4439 caliber with 32j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-3d05e370a153]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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