Automatic power on\/off: access to the device through the USB interface, without external power supply, automatically power on and off with the status of the connected device. Plug and play: No need to install additional software and drivers, just plug in the Bluetooth transmitter to easily connect. Widely compatible: Allow TVs, computers, cars and other devices to add Bluetooth functions, so that they can be connected to Bluetooth speakers, headphones and other audio playback devices. Low latency and high quality: The stable Bluetooth signal transmission capability allows the device to maintain high-definition within an effective distance of 10 meters without freezing.The aptX audio codec can achieve high-fidelity stereo and provide a better experience. Wireless, enjoy the peace of one person: You can enjoy the benefits of Bluetooth audio while exercising, watching late-night TV programs or only when you want to keep entertainment alone. Bluetooth version: V4.2 Transmission distance: 10M Working hours: USB powered Shell material: ABS Product function: Stereo Bluetooth audio transmitter Bare metal weight: 11.88 grams Weight with packaging: 65 grams Product size: 65 x 26 x 11mm The package includes: 1 x Bluetooth transmitter 1 x 3.5 audio cable 1 x 3.5 AV cable for TV