AUX Bluetooth receiver transmitter: Wireless o made easy with no loss in sound quality. Enjoy seamless listening through dual functionality. Bluetooth Transmission Mode (TX): Converts wired o into a Bluetooth signal, allowing wireless transmission to Bluetooth-enabled devices for o output. Bluetooth Receive Mode (RX): Receives Bluetooth signals and outputs them to wired o systems via a Bluetooth connection. Turn your TV into a Bluetooth-enabled device: Connect to your TV’s 3.5mm o output and wirelessly transmit sound to your headset—perfect for late-night viewing without disturbing others. Use in TX mode. Turn non-Bluetooth speakers into wireless ones: Connect to a speaker via the 3.5mm o port to enable wireless playback from Bluetooth sources. Use in TX mode. Built-in rechargeable lithium battery provides up to 4 hours of continuous use on a full charge, offering convenient and reliable performance. Enjoy stable wireless o within a 10-meter range in open areas, giving you freedom to move while maintaining a strong connection. Product Name: Bluetooth o Receiver Transmitter Combo Battery Capacity: 140mAh Bluetooth Version: V5.0 Usage Time: Up to 4 hours Bluetooth Range: Up to 10 meters (in open space) Charging: USB 5V/0.5A Output Connection: 3.5mm interface Input Connection: 3.5mm interface Compatible With: Android, iOS smartphones and tablets, all Bluetooth o devices, and any o equipment with a 3.5mm o input Color: Black Material: ABS Dimensions: 59.5 x 22 x 12 mm Package Contents: 1 x Bluetooth Receiver Transmitter 1 x Charging Cable 1 x 3.5mm o Cable Note: The package includes only the items listed above. Other accessories or products are not included. Note: Lighting and display settings may cause slight variations between the color shown in the image and the actual product. Measurement tolerance is +/- 1-3 cm.