Seiko Cal. 6610 - 640

The Seiko 6610-640 represents an important milestone in Seiko's 1998 lineup. Powered by the 6610 caliber with 25j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-d0f78bc96710]

Also known as: UFO, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1998

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