Its dimensions: height: 2.3 m, diameter: 1.2 m, head: 0.7 m. It weighed 250 kg at launch. It was built based on the military reconnaissance satelliteOfeq 3, which was previously built, also by IAI and El-Op, for Israeli government use.
ImageSat initially planned to launch a similar satellite every 6 years after EROS A.
EROS B was finally launched on April 25, 2006 aboard a Russian Start-1 rocket from the Svobodny Launch Complex in eastern Siberia. The satellite offers an optical resolution of 70 cm (about two feet), and as of launch date plans were to use it to monitor Iran's developing nuclear program for potential threats to Israeli security.