


| Items | Performance parameters |
| Shielding objects | Mobile phones, digital recording pens, recorders and any other device for sound acquisition |
| Shielding effect | Above 83% |
| Shielding distance | 1-2m |
| Shielding angles | Horizontal 90°-120°/vertical 90°-120° |
| Weight | 250g |
| Size of product | 122*78*27mm |
| Power supply mode | Built-in battery/power adapter |
| Operating current | 0.1A |
| Interference mode | Acoustic interference |
| Interference strength | 85dB |
| Operating temperature | -30ºC~40ºC |
| Material of shell | Plastic |
| fittings | Host, expander, power allocator, special connection line, equipment packing box |

