Seiko Cal. 5610 - 640

The Seiko 5610-640 represents an important milestone in Seiko's 1998 lineup. Powered by the 5610 caliber with 32j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-58e71a9fad49]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1998

Related Models

• Seiko 4566-194
• Seiko 7052-937
• Seiko 3871-246
• Seiko 0728-108
• Seiko 0724-215
• Seiko 5677-572
• Seiko 5219-553
• Seiko 4596-387
• Seiko 5280-914
• Seiko 4572-341
• Seiko 4541-997
• Seiko 5255-241