Seiko Cal. 6631 - 746

The 6631-746 is a sought-after Solar piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-43c96c4a9df3]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1988

Related Models

• Seiko 0769-252
• Seiko 7182-560
• Seiko 7168-202
• Seiko 5249-575
• Seiko 6621-401
• Seiko 3888-405
• Seiko 4487-468
• Seiko 4438-907
• Seiko 3897-145
• Seiko 4424-986
• Seiko 3848-738
• Seiko 7149-504