Signal Stable: This Bluetooth-compatible audio transmitter is designed with an external antenna that improves the signal.Can be connected to computer, CD player, MP3, laptop, etc.Application: Can transmit audio signal, so the Bluetooth-compatible earphone can receive the signal.Applicable Occasions: perfect for to music, games, watching , etc.Wide Compatibility: designed with USB connector and 3.5mm port to connect multiple devices.Name: TransmitterBluetooth-compatible compatible version: 5.2+Input port: USB/AUXAudio decoding: , -LLTransmission distance: 10mFrequency range: 2.402Ghz-2.480GhzSupported protocols: , A2DP, AVRCPPower supply: USB 5VType: Bluetooth Audio TransmitterInterface: 3.5mmWireless Type: bluetoothContent: Audio&Videocolor:BlackMaterial:ABSPackage Contents:1 x Transmitter1 x 3.5mm Audio CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.