Bluetooth Transmitter Car Charger Features:
1. Support full FM frequency: 87.5-108MHz;
2. Support automatic power off memory;
3. Support: QC3.0 charging (USB1 + USB2, a total of 4A);
4. LCD color display;
5. Support U disk / TF card music player;
6. Bluetooth answer, hang up, reject, and redial phone call functions;
7. Private phone call;
8. Support Aux input;
9. Support for Siri / Google Assistant;
10. Support selection of the folder to be played;
11. Real-time car battery voltage detection.

Wireless Car Charger with Bluetooth FM Transmitter Specifications:
Rated working voltage: 12V-24V
Limited working voltage: 9-32V
USB1 output: 5V / 1A, U disk
USB2 output: QC3.0 (3.6V-6.5V / 3A, 6.5V-9V / 1.5A, 9V-12V / 1A)
Working temperature: <60 ℃
Supported music format: MP3, WAV
Supported U disk, TF card capacity: 1GB-32GB    This link not include TF Card
Bluetooth version: version 4.2 + EDR
FM transmit power: 87.5MHz-108 MHz
Call effective distance: 0.5-2m
Bluetooth effective distance: less than 10 meters
LCD pixels: 128 * 160 (1.77 inches)

Packing size: 137*92.5*52mm/5.39*3.64*2.05"
Gross weight: 135g

Notes:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 
2. The picture may not show the actual color of the item because of different photographing light, angle and display monitor.