This camera is fitted with an f/11, 43mm lens and two speed shutter, 1/90 sec for bright daylight and 1/40 sec when a Magicube is fitted. The user manual suggests that ‘For best results in cloudy-bright conditions, insert a used magicube in the magicube socket. This reduces the shutter speed so that more light will reach the film.’
The same as the US made X-15 made between 1970 and 1976, the Brazillian X-1 was manufactured in 1979 although the author has been unable to source further information.