Seiko Cal. 6643 - 756

Seiko 6643-756

This Solar model from 1969 features a 39mm Titanium case. Powered by the 6643 caliber with 30j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-effc5836cc9a]

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
15.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Green
Jewels
30j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1969

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