1.Colorful Large Screen DisplayThe car FM transmitter uses a 1.44-inch large color high-definition display; clear and easy to see at night. It can show playback information, caller number and car voltage. Supports displaying folder names, song names and album names from U disk/TF card. 2.Sound Modes and Playing Modes--The car bluetooth adapter is equipped with multiple EQ sound effects modes, such as pop, rock, jazz, and country; etc. Plus, it supports multiple playback mode selections, like random playing, sequential playing and folder songs playing, which bring you better music enjoyment. 3.QC3.0 High Speed Smart ChargingThis iphone car charger comes with two usb ports, one for QC3.0 fast charging one for charging/flash disk music playing, safe charging or playing music. 4.Bluetooth 4.2 and HD Sound QualityBluetooth 5.0 brings high-performance audio playback, supports lossless music, accented sound, high-resolution and high-performance playback of multiple audio formats; enjoy clear music and calls without any noise. 5.Super Simple One-button Operation One-button answer / reject / hang up / music playback or pause / voice assistant wake up / adjust FM channel, a new generation of minimalist operation bluetooth fm transmitter.