enjoy Wireless Streaming Music: This Bluetooth Adapter Can Be Connected To Non-bluetooth Car Audio Systems, Home Stereos, Speakers, Wired Headphones Via The 3.5mm Aux Connector. Built-in Bluetooth 5.0 Chip Provides Faster Transmission, Stabler Connection And Wider Signal Range. intelligent Noise Cancellation: With The Latest Cvc8.0 Noise Cancellation And Digital Signal Processor (dsp) Technologies, Our Bluetooth Audio Receiver Adopter Can Eliminate Echos And Block Out Intrusive Background Noises (such As Wind, Traffic Or Crowds), Giving You Crystal-clear Audio Sounds. up To 4 Hours Of Battery Life: This Aux Bluetooth Adapter Works Up To 4 Hours For Your Calls Or Playing Music. In Addition, It Can Be Used While Charging, Which Is Very Convenient For You To Listen To Music On A Long Trip. hands-free Calling & Navigation: Equipped With A Multifunctional Button To Answer/redial/hang Up/reject Calls, Along With The Built-in Microphone, You Can Make Calls Hands-free. It Also Supports Broadcasting Voice Notifications From The Sat-nav App. No Need To Look Down At The Phone While Driving.