Seiko Cal. 6631 - 545

The 6631-545 is a sought-after Solar piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-0da0964bee59]

Also known as: Rally, Sportsmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1966

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