Seiko Cal. 4548 - 540

Released in 1965, the Cal. 4548 with design code 540 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-28ae2ccef5d2]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

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