Product Features: Bluetooth 5.2, 5 hours of battery life, lossless sound quality, hands-free call, plug and play, AUX interface. Bluetooth mitter mode (TX): Convert wired audio into Bluetooth signal, and mit it to Bluetooth device for output. Bluetooth Receiver Mode (RX): Receive Bluetooth signal and mit it to wired audio through Bluetooth connection. Connect to the TV's 3.5mm audio interface, and mit the sound to the headset via Bluetooth, so you are not afraid to disturb your family when watching movies at night. Connected to 3.5mm audio port, the speaker without Bluetooth function can also be played wirelessly. Connect the bluetooth connector to the car AUX interface through the adapter, and connect the bluetooth to the car stereo, which 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: high-resolution restoration of lossless sound quality, bringing CD-level music experience only one, you can listen to the music in your phone. Fully charged once and used for 5 hours: the built-in rechargeable lithium battery , and can be used for 5 hours , which is convenient and worry-free. Bluetooth 5.2 listening to songs without lag: low power consumption and high rate stable signal mission, listening to songs more smoothly. Bluetooth Version: V5.2, Battery capacity: 120Amh, Working range: 10m (without any obstacles), Charging time: 2.5 hours, Use time: 5 hours(Music and Calling), Standby time: 100 hours, Support Mic: Yes,Receiver RX Mode With Mic Handsfree Calling ( mitter TX Mode is not supported Mic), Product Size: 99 x 20 x 12mm Product Specifications: Product Model: BT16 2 IN 1 Bluetooth Audio Receiver mitter Product Color: Black Material: plastic Receiver Mode For: Car Kit/Wired Speaker/Home Speaker/Speaker Power amplifier/Headphone ect... mitter Mode For: TV/PC/Projector/Power amplifier/TV Box /Bluetooth Headphone/Earpho