Safe Driving: Support Voice Commands via Siri & Google Assistant to control your phone, such as make calls or send messages. Keep your eyes on the road as you speak to ensure safety. Simple to Use: Simply connect your phone via Bluetooth pairing and easily clip it on your car sun visor with the durable magnetic back clip. Just remove the Bluetooth Speaker to charge without removing the back clip. Also suitable for indoor & outdoor. Clear Sound Quality: Echo Cancellation and Noise Reduction technology and 3W powerful speakers provide a loud & clear sound experience. Even if you are in the noisy areas, you can have clear Hands-free calling and music playback. Connect 2 Phones: Support Bluetooth to connect 2 phones at the same time. Once Bluetooth is successfully paired, it will automatically connect next time. After disconnecting for 5 mins, it will automatically turn off to save power. TF Card to Play Music: Built-in TF card interface, you can insert TF card to play music. Features: 1. Sun visor type car Bluetooth hands-free intercom. 2. Bluetooth answering, hanging up, rejecting, redialing and other functions. 3. Support Bluetooth stereo music playback. 4. Support mobile phone MP3/WMA/WAV format music. 5. Automatic power-off memory function. 6. Support TF card (1-32G). 7. Support mobile phone navigation voice prompts. 8. You can connect two mobile phones with Bluetooth pairing at the same time. 9. Magnet base design, suitable for multimedia Bluetooth speakers in cars, offices, outdoors and other occasions. Specification: Bluetooth version: Version 4.2+EDR, support Apple mobile phone SIRI function (voice dial function) Bluetooth sound processing: with A2DP (Advance Audio Distribution Profile) function Rated working voltage: 12V~24V Limit working voltage: 8-32V Support music format: MP3/WMA/WAV Support TF card capacity: 1G-32G Working temperature: 60dB Distortion: 60dB Bluetooth transmission distance: less than 10M Bluetooth microphone effective distance: 0.5-2M Effective launch distance: 2M