Usage Tips:CD quality: aptX HD is supported in both TX and RX modes. When using Hi-Fi devices, you can send or receive with pure sound. aptX Low Latency Support: When you use TX mode, you can pair aptX low latency Bluetooth headsets while watching TV. You won't be able to detect lag. Dual Link: Can be paired with two Bluetooth receivers at the same time, such as pairing with a Bluetooth headset and a Bluetooth speaker. Stream HD audio to two devices simultaneously. With display bar: plus blue LED indicator, Bluetooth mission and reception status can be seen at a glance. Always Standby: Always in pairing mode, even when paired Bluetooth devices are turned off. Therefore, we recommend that you connect the Bluetooth adapter to a power source when the battery is depleted. Material:Metal + Plastic colour:black Package Contents: 1 * Bluetooth 5.0 adapter 1 * Fiber Optic Cable (1m/3.28ft) 1 * USB power cable (50cm/1.64ft) 1 * 3.5mm AUX audio cable (50cm/1.64ft) 1 * RCA cable (50cm/1.64ft) 1 * English manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.