Seiko Cal. 4420 - 728

The 4420-728 is a sought-after Solar piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-02ac4cc7ba1e]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1996

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