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 1.5V1,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 or 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. 1 x FM Transmitter 1 x FM Receiver 1 x Headset 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.