Seiko Cal. 5610 - 640

Seiko 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

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