Seiko Cal. 6631 - 610

The Seiko 6631-610 represents an important milestone in Seiko's 1984 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-df80d4f6a3a3]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1984

Related Models

• Seiko 6137-173
• Seiko 4563-672
• Seiko 6283-946
• Seiko 6185-855
• Seiko 3869-527
• Seiko 7026-246
• Seiko 5288-851
• Seiko 5259-562
• Seiko 0752-220
• Seiko 4590-986
• Seiko 6612-763
• Seiko 6244-147