2-in-1 Wireless Transmitter Receiver Music Audio Adapter BT 5.0 with aptX Low Latency 3.5mm Aux Jack for TV PC Home Speaker Car Stereo Headphones Features: 2-in-1 Wireless Transmitter & Receiver: Turn any media device into a wireless transmitter/receiver, enables your digital TV, PC and other audio players to transfer signal to your BT headphones/speaker(TX mode); allows you to enjoy music or hands-free calls of the mobile phone through the speaker/car stereo/headphones without BT connection function(RX mode) BT V5.0 and aptX Low Latency: Adopts the module design of CSR8670 main chip and BT V5.0 connection, which provides more stable and faster audio signal transmission; with aptX, you can enjoy high-quality audio sound wirelessly over BT connection with aptX-source devices like TV, phone or tablets. Dual Link for Sharing the Fun: Supports connecting 2 BT devices at the same time, you and your loved can watch video or listen to music without disturbing the children with 2 devices simultaneously connected; or you can enjoy your music and won't miss any calls, or listen to music or audio navigation at the same time. Long Working Time: Built-in 450mAh rechargeable battery, can be easily recharged via the included USB cable; and supports automatic power off function to save power and ensure longer working time. Compact Size and Simple Operation: compact size and plastic shell design, portable and lightweight; quick and easy to pair; 2 switch for converting TX/RX mode and SPDIF/AUX connection easily; 4 control buttons for simple operation. Specification: BT version: BT V5.0 +EDR BT Solution: CSR8670 Output power class: CLASS2 BT range: around 10 meters BT protocol: A2DP AVRCP Working voltage: DC 3.0-4.2 V Working current: <= 23mA Battery capacity: 450mAH Charging voltage: DC5V Frequency Range: 2.402GHz-2.480GHz Codecs: aptX-II aptX AAC SBC Item Size: 6 * 6 * 1.8cm/ 2.4 * 2.4 * 0.7in Item Weight: 42g/ 1.5oz Package Size: 12 * 8.5 * 5cm/ 4.7 * 3.3 * 2in Package Weight: 160g/ 5.6oz Note: The smartphone showed in the picture is not included. If you want e aptX function, you BT headphone and BT speaker(TX mode) , or your smartphone(RX mode) should support aptX. Package List: 1 * Receiver 1 * USB Charging Cable 1 * 3.5mm Audio Cable 1 * Optical Digital Cable 1 * RCA Cable 1 * Sticky Gel Pad 1 * Users' Manual(English)