Seiko Cal. 4520 - 717

The Seiko 4520-717 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-92ec390169fe]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1975

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