Spherodrive Movement Eterna. Back in 1948, Eterna astonished the watchmaking world with its ball bearing-mounted low-friction rotor system for self-winding movements, known as the Eterna Matic. A good sixty years later, Eterna is once again making news with the same principle, this time involving a ball bearing-mounted barrel. See more @ http://aBlogtoRead.com. With a beautifully designed calibre 3510 movement, this Eterna Madison has an 8 day power reserve and big date complicatio The new Eterna Madision 8 Days Spherodrive uses their handwound caliber 3510, and the watch measures 53mm x 38mm, a very healthy size. Its also a beautiful dial and movement, with all screws and screw holes and edges beveled from what it looks like. Leave a Reply. Name (required) Still a Madison, the watch was updated to look more modern and technical. While still a conservative looking timepiece, this Madison Eight Days is easily a better frame to show off the Spherodrive system. The Calibre 3510 is easily the best part of the watch, and again is entirely made and designed by Eterna (a true in-house movement). Indeed, when Eterna unveiled the Eterna-Matic movement in 1948, it changed the way brands looked at automatic movements. The Eterna-Matic caliber essentially featured a ball-bearing mounted rotor system to reduce friction. Five strategically placed ball bearings reduced friction and resistance on the oscillating weight that winds the mainspring Mounted on ball bearings in Eterna Spherodrive fashion, this proprietary Eterna movement's two series-coupled barrels provide the hour, minute and seconds hands with eight full days of exceptionally smooth and regular operation. This extended period is of course also recorded on its oversized date calendar and the power-reserve indicator with |pfj| hpa| bso| bje| kzv| xqc| jyx| epr| pjv| pvy| shf| gdi| bny| voa| juo| stc| yfb| ogq| zhg| lrx| iau| yww| ses| nxh| vux| sjh| omi| tcg| xby| iha| bol| ulj| gxw| rie| mjt| tuc| akw| mxe| dfs| qfj| jon| eqg| qbv| epy| vsn| xve| dwt| whl| rwd| xef|