YIXUAN 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. Dual USB charging, QC3.0+2.4A USB charging. QC3.0 interface output: 3.5-6.5V/3A, 6.5-9V/2A, 9-12V/1.5A USB standard interface: 5V 2.4A Turn off the FM function. Long press a song key to turn off the FM function. Readable TF card, supports MP3 and WMA format files, can be used as a card reader Full frequency point emission, 87.5-108.0MHZ, LCD liquid crystal screen, display working frequency working status A2DP function, stereo, automatic noise reduction, echo cancellation. Specifications: 1. Input voltage: DC12V-24V 2. Output voltage: DC5V+/-0.25 3. Output current: QC3.0+2.4A 4. Bluetooth version: Actions 5. Effective distance: 10 meters 6. FM range: 87.5-108.0MHZ 7. Display screen: 1.7 inches 8. Multiple protections: overcurrent, overvoltage, overtemperature, short circuit protection Included: 1*Car Bluetooth