| Earpiece Specification: |
| Frequency Range: 200Hz~5400Hz |
| Distortion Rate: <2% |
| S/N Radio at 2KHz: >5KHz |
| Saturated Output(OSPL 90dB): 110dB |
| Relative Sensitivity Limit: <-90dB |
| Static Current: 0.80mA |
| Battery Life (SR416SW battery): 2.5~5hrs |
| Bluetooth specification: |
| Bluetooth handsfree is Motorola H500 earset |
| Transmission range: to earpiece < 20cm, to cellphone <10 meter |
| Working frequency: 2400~2480MHz |
| Bluetooth size: 2.7x5.9x1.9cm |
| Neckloop: D0.3 x L84cm |
| Bluetooth & Neckloop color: Black |
| Integrated Microphone: Yes |
| Bluetooth passward is "0000" |
| Compatibility: Bluetooth 2.0 |