Seiko Cal. 4430 - 830

Seiko 4430-830

The 4430-830 is a sought-after Solar piece from Seiko's golden era. Powered by the 4430 caliber with 20j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-bfe34e63eb2e]

Also known as: Sportsmatic, World Timer

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
42mm
Case Thickness
13.0mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
20j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1968

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