| EARPHONE ELEMENT TYPE | DYNAMIC |
| EARPHONE IMPEDANCE RATING | 500.0 OHMS MINIMUM AND 600.0 OHMS MAXIMUM |
| EARPHONE MOUNTING METHOD | SUSPENDED ON ADJUSTABLE HEADBAND |
| EARPHONE QUANTITY | 2 |
| CONNECTOR IDENTIFYING NUMBER | U-77/U TYPE NO. |
| CONNECTOR NAME | PLUG |
| CONNECTOR TO JUNCTION CORD LENGTH | 10.000 FEET |
| FREQUENCY RATING | 100.0 HERTZ MINIMUM AND 8000.0 HERTZ MAXIMUM |
| FSC APPLICATION DATA | HEADSETS,HANDSETS,MICROPHONES AND SPEAKERS |
| IMPEDANCE RATING | 350.0 OHMS NOMINAL |
| MICROPHONE ELEMENT TYPE | DYNAMIC |
| MICROPHONE MOUNTING FACILITY | BOOM ADAPTER ON LEFT SIDE OF HEADBAND |
| SPECIAL FEATURES | 9.250 IN. HIGH BY 8.250 IN. WIDE BY 3.500 IN. DEEP; EARPHONES ARE WIRED FOR STEREO OPERATION; EARPHONE CUSHIONS ARE OF VINYL COVERED POLYURETHANE FOAM; MICROPHONE HAS NOISE CANCELLING FEATURE |
| UNPACKAGED UNIT WEIGHT | 1.500 POUNDS NOMINAL |