Features 1、The wireless FM transmitter receiver microphone system with lapel clip is easy to carry and provides a comfortable way to wear. 2、Provide good audio quality, high definition sound quality, pleasant to the ear, very suitable for teachers, lectures, schools, etc. 3、Battery switch makes standby better, extend battery life with the included on/off switch when not in use. 4、Made of ABS composite plastic material, it has good impact strength and low temperature resilience. Make the receiver durable. 5、With wide compatibility, this FM adapter can be used for Meeting, Etiquette, Lecture. Specification Item Type: Wireless FM Transmitter Receiver Model: KM208 Material: ABS Function: FM Transmitter Receiver Builtin Battery: Dry Battery (not Included) Battery Model: 9V Transmitter Built In Battery: Dry Battery(not Included) Battery Model: AA 1.5V Package List 1 x FM Transmitter 1 x FM Receiver 1 x Headset 1 x Manual