Seiko Cal. 6631 - 499

The 6631-499 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-3e4d4e381ada]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1997

Related Models

• Seiko 4583-953
• Seiko 0744-307
• Seiko 4586-840
• Seiko 4474-738
• Seiko 6193-827
• Seiko 6643-877
• Seiko 6688-234
• Seiko 4594-126
• Seiko 4447-388
• Seiko 7195-764
• Seiko 7141-477
• Seiko 7187-334