MP3 Player Can Be Inserted Into USB Flash Drive Memory Card Fast Charging Voltage Monitoring Voice Navigation Vehicle Model Universal In Car Bluetooth Features: Advanced Bluetooth 5.0 technologyThe built-in Bluetooth 5.0 chip provides a stable connection for playing music and making hands-free calls through FM frequencies, allowing for faster pairing with compatible devices. The built-in microphone allows for easy calling through buttons. You don't need to hold your phone. This hands-free calling car accessory makes your driving safer. Supports the use of USB drives and memory cards It can be inserted into USB drives and T-Flash cards for use, automatically obtaining music from USB drives and T-Flash cards. Once inserted, it can be played. High definition CNC display Real time monitoring of car battery voltage, keeping track of the car's health status at any time, making it clear and visible during night travel. Simultaneous charging of two interfaces There are two interfaces that can be used, and both the phone and tablet can be charged simultaneously without affecting the charging speed. It can supply power to two devices simultaneously to meet different charging needs. Intelligent Control Chip Built in intelligent management chip, adaptive current, effective control of overload and heating, long-term charging without overheating, and safer low-temperature charging. Navigation voice broadcastMobile navigation broadcast, built in microphone, supports smart voice navigation of mobile phones, and its accuracy is the sound of various mobile phone applications. Product Description: Product Name: Car Bluetooth Product color: black Product material: ABS Bluetooth version: 5.0 Input voltage: 12V-24V Output current: 5V-1.0A or 5V-3.1A Frequency response range: 20Hz-20KHz FM transmission frequency:87.5-108.0MHz Features: FM transmission, Bluetooth, USB charging, reading USB drive, reading T-Flash card Package size:10.175.3cm/42.82.1in Package weight:45g/0.1lb Product List: 1 Host 1 instructions