Seiko Cal. 4440 - 840

The 4440-840 is a sought-after Solar piece from Seiko's golden era. Powered by the 4440 caliber with 23j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-f4bf15901317]

Also known as: Bellmatic, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1975

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