Case: Stainless steel with screw-back
Movement: ESA 9154 Dynotron - 13-jewel battery-powered electro-mechanical with balance wheel. Battery bridge signed "Rado"
Description: Newtronic is an early electro-mechanical Rado model introduced in the late 1960s (see image from a 1969 Japanese product catalogue here) The two watches shown here represent the two known dial versions--silver with horizontal markers and charcoal-grey with radially-aligned wedge hour markers. The crystal has the original Rado anchor emblem in the center. Printed on the dial (see images below) are the brand and model names as well as "LIC. ATO SWISS ELECTRONIC"—a reference to the use of technology owned by the ATO brand of Société des Etablissements Léon Hatot, pioneers in the realm of electric and self-powred timekeeping devices.
The bracelet pictured is not original to the watch and was added for purposes of photography. It is believed that the cases of all newtronics were radially brushed; the silver example below has aparently been polished incorrectly.
Photos: Click for larger images
These watches have been sold.