1. Speaker: 15 mm dynamic type.
2. Impedance: 32 Ohms +/- 10%.
3. Sensitivity: 88 +/- 3 dB.
4. Mylar thickness: 12,9um (option).
5. Card length: 80cm ( 4 feet ).
1. Connector: 3.5 mm or 2.5 mm.
2. Handset (option).
3. Microphone (option).
4. Packing: poly bag or blister.