1.Equipped with LED display screen to display car battery voltage, hands-free call, FM FM transmission, lossless connection Bluetooth 5.0, music, navigation transmission, USB MP3 playback2. Dual USB interfaces for simultaneous power supply3.Built-in management chip, smart shunt fast charging without damaging the machine4.Adopting high performance master control chip with 5-layer circuit protection for safer use,5.Metal elastic contact design, suitable for cigarette lighter of different sizes, able to carry 12V/24V wide voltage input, compatible with most car models on the market6.Compatible with wide tuning, smart adjustment for mobile phones, Bluetooth and tablets, while also meeting the charging needs of driver and passenger