Seiko Cal. 4540 - 984

The Seiko 4540-984 represents an important milestone in Seiko's 1970 lineup. It features a Navy dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-76e1c9f14a0a]

Also known as: Bellmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1970

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