Features:
| SSM-121 | |
| Video Signal System | EIA standard |
| Picture Tube | 9" B/W measured diagonally. 90º defelction |
| Video Inputs | High Impedance more than 10kohm |
| Video Outputs | Impedance more than 10kohm |
| Horizontal Resolution | More than 750 lines at center |
| Power consumption | 27W |
| Weight | 13lb (5,3kg) |