1. Unitary functions: can be used separately or together with PTT microphone.
2. With coiled PU cable for retractable use.
3. Communication privacy, avoids bothering anyone.
4. High-quality dynamic earphone gives handheld crystal clear audio.
1. Speaker diameter: 23mm.
2. Impedance: 32 Ohm.
3. Frenquency response: 20-20KHZ.
4. Sensitivity: 91 db.