Seiko Cal. 4537 - 390

Released in 1972, the Cal. 4537 with design code 390 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-0250ec4599bd]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1972

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