Seiko Cal. 6616 - 540

The 6616-540 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-0e037d33e393]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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