Καινούργια,δεν έχουν χρησιμοποιηθεί καθόλου.Δεν έχω την συσκευασία τους.
Single-Ear Intercom Headset
For IS103 Intercom System
Closed
Dynamic
Noise isolation
Microphone mute function by flipping up the microphone
Colour: Black
Technical data of the handset:

Frequency response: 20 Hz – 20,000 Hz
Impedance: 400 Ohm
Sensitivity: 96 dB SPL (1 kHz /1 Vrms)
100 mW input power
Technical data of the microphone:

Dynamic
Polar pattern: Cardioid
Frequency response: 50 Hz – 15,000 Hz
Impedance: 200 Ohm
Sensitivity: -64 dBV/Pa (0.6 mV/Pa) @ 1 kHz
1.5 m long connection cable with 4-pin female XLR plug