Seiko Cal. 6631 - 524

Released in 1984, the Cal. 6631 with design code 524 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-0d7825fb602e]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1984

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