Seiko Cal. 6646 - 730

The Seiko 6646-730 represents an important milestone in Seiko's 1985 lineup. Powered by the 6646 caliber with 17j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-2e9dc3f657e3]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1985

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