marketed in 1966-67
model: ???.91660
instruction manual: 9166
silent super 8 cartridge
lens: Sears Cintagon Zoom f: 1.8 \ F: 8.5-42.5 mm
zooming ratio: 5x
focusing: manual
rangefinder: ?
zooming: auto and manual
filter size: ?
viewfinder: single-lens reflex with adjustable eyepiece
viewfinder information: ?
exposure: auto exposure control; not TTL EE, CdS cell
film speed: auto for 25/40 and 200/250 ASA only (daylight/tungsten)
ASA notching: 1-pin
CCA filter: built-in 85A filter, coupled with movie light socket
filming speed: 18 fps
shutter opening angle: <180 degrees
sound: no
remote control socket: yes
cable release socket: ?
movie light socket: screw type, with filter key
battery check button: yes
film counter: 0-50 ft
handle: retractable
film drive motor: DC micromotor
battery check button: ?
power source: 4 x AA batteries \ 1 x button cell for light meter
weight: ?
dimensions: ?
tripod socket: 1/4"
made in Japan by Sankyo
It is same as Sankyo Super 5x.