Seiko Cal. 6181 - 637

The 6181-637 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8583553f983e]

Also known as: Bullhead, Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1990

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