Seiko Cal. 4520 - 307

The 4520-307 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-7e7e082e9728]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1999

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