This profession grade wireless audio bug comes with a transmitter and a receiver. Place the transmitter in a hidden place and take the transmitter with you. Now you can hear everything that is being said in the room where you placed the transmitter even from 100 meters away!! Need to hear what your staff is up to? Place this transmitter in the room and go to your car and sit and listen to what they are saying.
The transmitter and receiver have built in rechargeable Li-batteries that ensure it keeps working for about 5 hours. Just turn on the power and plug the earphone in the receiver, you will hear clear voice around the transmitter in a long distance range.
Dimension: Both transmitter and receiver are 35 x 50 x 21mm
Antenna: Transmitter uses soft-antenna;
Receiver uses telescopic antenna .
Transmission range: 200 meters in building area and 1000 meters in open area .
Battery: Rechargeable polymer lithium battery
Battery Life: Transmitter 15 hour; Receiver 30 hours.
Microphone: >=12db sensitive, high resolution within 50m2