Dual USB | Quick Charge 3.0 | Enhanced Bass | AUX 3.5mm Car Kit w/ Car Stereo Microphone for Hands-Free Calling | Siri&Google Assistant AUX BLUETOOTH RECEIVER – Upgrade your vehicle to have advanced new Bluetooth 5.1 capabilities and play music/audiobooks through your car stereo from your phone by connecting the built-in 3.5mm AUX cord. Amplify your favorite music with one press enhanced bass booster options for the ultimate listening experience. HANDS-FREE CALLING – Simplify using your phone to make calls while driving with an easy quick press button that answers/hang up, redial, and rejects calls. Automatically switch to hands-free mode when receiving a phone call and enjoy zero sound interference via the enlarged built-in microphone and CVC/DSP noise cancellation. VOICE ASSISTANT – Keep your hands on the wheel by managing phone calls, text, navigation, and music by speaking commands using Siri / Google Assistant applications. FAST CHARGING – Rapidly charge your phone via the dual USB QC3.0 / 2.4A ports on the car cigarette charger with the latest quick charging technology. LIVE CUSTOMER SUPPORT – Need help? Email or call our personal care team. Rexing stands behind all of our products with a ***18 Month Warranty ***