The audio receiver transmitter is convenient and practical, with excellent texture, and can serve you for a long time without being easily . The craftsmanship can serve you well without breaking easily. This is a very practical audio receiver transmitter. Features -Color: Black -Material: high strength fireproof PC -Size: 9.20X6.50X2.00cm/3.62X2.55X0.79in Version: 5.0 Music format: MP3/ /FLAC/WAV/WMA Output port: AUX, Input port: , AUX, , optical Transmission distance: about 10m Battery: 500mAh - With port, port, optical port, AUX port, USB port and slot, wide compatibility. - Receiving mode: convert speaker into -enabled device, receive from phone or tablet. - Transmitting mode: convert computer, TV, projector or power amplifier into enabled equipment, connect to your speaker or headset. - FM mode: support 87.5-108MHZ full channel adjustment, just need to car to the same as the adapter. - Adopt 5.0 chip, low power consumption, fast transmission speed, strong - and stable . Package list: 1 x Host 1 control 1 x 3.5mm audio cable 1 1 x Charging cable 1 x Manual