Seiko Cal. 5680 - 540

The 5680-540 is a sought-after Quartz piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-300c92fb6d9b]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1968

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