Seiko Cal. 4439 - 928

The 4439-928 is a sought-after Solar piece from Seiko's golden era. Powered by the 4439 caliber with 31j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-41bd21fac8aa]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1997

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