MOCREO Ultra-Portable Aptx Coding Bluetooth Stereo Audio Streaming 2-in-1 Bluetooth Receiver Transmitter Adapter W/ Bluetooth 3.0, 3.5mm AUX-IN, Aptx Coding - Compatible with TV, Traditional Speakers, Car Stereo, iPhone 6 Plus ,Samsung Galaxy S5/S4 and 3.5mm Audio Devices - ClipXR (Black) 2-in-1 Bluetooth receiver and transmitter which incorporated the latest "Aptx" decoder for Bluetooth HD quality music. Simple one-button switch to shift between transmitter(TX) and receiver(RX) mode Bluetooth CRS 3.0 enables you enjoy the music from your mobile phones without wire restriction. You'll get reliable, high-quality sound. Automatically connect with the last-paired audio device. Equipped with a solid clip, very convenient for your wearing. Ultra-portable and it can be clipped on your clothes or bag for convenience Aptx coding delivers full wired sound quality with an impressive dynamic range over Bluetooth Automatically connect with last-paired audio device. Built-in rechargeable lithium battery for wirelessly connection