Seiko Cal. 4425 - 497

This Spring Drive model from 1970 features a 37mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-07676a1b3df0]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1970

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