Features: 1.The product configured as receive and start two in one Bluetooth device. 2.Very simple, free to start and receive, fast connection, more stable sound. 3.Music mobile phone can sent to traditional home audio device via Bluetooth reception mode. 4.Through Bluetooth product start mode makes easier to send TV, player, MP3 or other source to Bluetooth loudspeaker or Bluetooth earphone. 5.Because low delay technology, also supports live broadcasting of online games, TV and movies, built?in rechargeable battery for long battery life. 6.Solves the imitative problem of audio equipment perfectly and extends transmission function of various audio equipment. specification:Condition: 100% Brand New Item Type: Bluetooth Audio Transmitter Receiver Material: ABS Color: As Pictures Shown Stereo Transmission Frequency: 2.4-2.48GHZ Transmission Range: 10 Meters Battery Type: Polymer Lithium Battery Battery Capacity: 200MA Continue Using Time: 4.5 Hours Bluetooth Version: 5.0 Charging Time: 2 Hours Charging Voltage: 5V Weight: Approx. 48g PackageList:1 x BluetoothAudio Transmitter Receiver1 x USB Cable1 xAudio Cable1 xManual Note1. Due to manual measurement, please allow 1?3mm error. 2. Due to the difference between different monitors, there is color difference, please refer to the real object!