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 : 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.