Bluetooth Transmitter v4.0 Receiver and Transmitter Blutooth Wireless Bluetooth Adapter 3.5mm Jack AUX + USB cable for HeadphonesBluetooth 4.0 technology, high quality and high speed transmission signal. The transmission distance is up to 10m / 33ftUSB Powered: With a USB plug, you can plug and play this transmitter easily and no other driver software is needed, powered by USB, there is also no time limited.+ productPerfect Sound Effect: Adopts advanced Bluetooth module which enables it to achieve high quality sound effect with A2DP. You can listen to music, watch movies and play games without disturbing others.Bluetooth Technology: Wireless 4.0 technology ensures transmitting strong signal in high quality and high speed. The transmission distance is up to 10m/33ft, free to enjoy music wirelessly.BT Audio Transmitter: Can be connected to audio devices (such as TV and PC, etc.) without Bluetooth function, turning them into BT-enabled devices and making it work with BT-enabled headset and speaker.Mini and Portable: Delicate and high-end glossy appearance design, mini and lightweight, very easy to carry and keep.FeaturesBluetooth version: 4.0Transmission distance: up to 10 mSize: 65*26*11mmPackage Included: 1 * Bluetooth Transmitter, 1 * 3.5mm Audio Cable, 1 * RCA Cable