1、The music of the wireless receiver with Bluetooth 50 chip installed, with 2 times the transmission speed, strong connection stability, wider signal range. 2、Bluetooth receiver with a display screen, simply on the screen, you can view all the information of the wireless streaming status, the screen displays the Bluetooth connection status, battery capacity and caller ID, etc. 3、Provide audio wireless HIFI, if you like rich bass and stereo, you can support for avrcp a2dp hfp and for hsp profiles, just press the "+" and "‑" buttons to activate the surround sound effect. 4、One‑click call "phone button" to answer/hang up/reject, hand release and sound assistant. 5、Double‑click the "phone button" to reschedule the call, press and hold the "phone button" to activate the sound assistant to make calls, send text messages or get driving directions, making your device safer and more convenient. 1 x Receiver1 x Instruction1 x Charging cable1 x Connection line1 x 3.5mm head Item type: Wireless Audio ReceiverMaterial: ABSColor: As picture shownWeight: Approx. 71g Bluetooth version: V 5.0Frequency range: 2.402GHZ- 2.480GHZPower input port: Micro USB DC 5VTransmission distance:> 10 meters/ 32.8FTBuilt-in battery: 250mAhBattery type: lithium batteryCharging time: about 2 hoursWorking time:> 10 hoursAudio output: 3.5MM audio output interface for SBC, AAC (RX)