Seiko Cal. 6645 - 736

Seiko 6645-736

The Seiko 6645-736 represents an important milestone in Seiko's 1978 lineup. Powered by the 6645 caliber with 32j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-197ea6151aec]

Also known as: Silverwave

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
46mm
Case Thickness
14.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Cream
Jewels
32j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1978

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