Seiko Cal. 4540 - 320

The 4540-320 is a sought-after Kinetic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-a714c875a26c]

Also known as: Tuna, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1979

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