Seiko Cal. 4420 - 310

This Solar model from 1987 features a 44mm Two-Tone case. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-cd2507df9cd5]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1987

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