Crystal Clear Music Streaming: You can stream your favorite tunes thru your car's stereo, anti-static and interference-free, via Bluetooth, USB Flash Drive (32GB), and/or microSD card (32GB). Advanced noise reduction technology will ensure brilliant interruption-free music. Note: APE, WMA MP3 WAV APE FLAC music formats in USB flash drive or microSD card are supported. Answer Calls Hands-Free: High-performance microphone with Noise Suppression (CVC) technology, grants you a crystal clear call every time. Answering/redialing/dismissing or ending a call just simply click a button. CVC (clear voice capture) noise echo canceling and noise suppression technology helps transmit crystal clear voice quality when making calls. Bluetooth V5.0 with Siri, Google, and Alexa AssistantProviding added stability and more lasting connection without sporadic interruptions, Bluetooth 5.0 features echo-cancellation to reduce background noise giving clearer calls and supporting voice commands to ensure safer driving. You can also use Siri, Alexa, or Google Assistant to make phone calls, send texts or get driving directions. Enjoy complete voice-control and safer knowing your paying attention to the road and not your phone. Intelligent Fast Charging & 3 USB Ports: With 2 USB ports (5V-2.4A and 5V-1A) and 1 USB-C PD Type-C 18W, you can charge three devices simultaneously. Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, will effectively ensure safe charging. Car Battery Voltage Detection: - Built-in intelligent voltage detection chip, detecting car battery voltage when booting. The FM transmitter will display the cars voltage when plugged into the cigarette lighter. Keeping you in the driver's seat and informed of the car battery healthy at all times to avoid problems when driving.