| Frequency Response | 20 KHz to 100 KHz |
| Power Supply | DC 9V battery. 006P, MN1604 ( PP3 ) or equivalent, Alkaline or heavy duty type battery. |
| Power Consumption | Approx. DC 34 mA |
| Operating Temp. | 0 to 50 ( 32 to 122 ). |
| Operating Humidity | Less than 80% RH. |
| Weight Approx. | 260 g/0.57 LB ( including battery ). |
| Size | HWD 255 x 70 x 28 mm ( 10.0 x 2.8 x 1.1 inch ). |
| Optional Accessory | Earphone, Model : EA-100 |