Function: Bluetooth 5.0 4 hours battery life Lossless sound quality Hands-free calling Plug and play AUX interface Bluetooth Transmission Mode (TX): Convert wired audio to Bluetooth signal and transmit to Bluetooth device output Bluetooth Receive mode (RX): Receive bluetooth signal, transmit to wired audio through bluetooth connection Connect to the 3.5mm audio interface of the TV, and transmit the sound to the headset through Bluetooth, so you can watch movies at night without worrying about disturbing your family. Connect the 3.5mm audio interface to the speaker without Bluetooth function and can also play wirelessly Connect the bluetooth connector to the car AUX interface through the adapter/adapter cable (standard), and connect the bluetooth to the car stereo, you can not only make calls, but also listen to dynamic music, so that your journey is no longer lonely. Lossless sound quality CD-level enjoyment: Lossless sound quality high-resolution restoration brings CD-level music experience once you can listen to the music in your phone Fully charged, 4 hours of use: The built-in rechargeable lithium battery can be used for 4 hours when the battery is low, which is convenient and worry-free Free Bluetooth 5.0 listening to songs without lag: low power consumption, high speed and stable signal transmission to listen to songs more smoothly Features: Bluetooth solution: 5.0 EDR A2DP HSP AVRCP Frequency: 2.4ghz-2.48ghz Bluetooth transmission distance 10m Bluetooth receiving distance 10m Charging voltage: DC 5V Battery 140 Haoan Working time: about 4 hours Product color: black Package includes: 1 x adapter Products from 's store