Brand Name: bosion
Voltage: 12V
Install Size: 2 Din
Special Features: MP3 Players
Material Type: ABS
Out Power: DC/5V
Radio Response Bandwidth: 87.5-108MHz
Item Size: 44x52x83mm
Computer Memory Size: MORE THAN 32GB
Item Weight: 0.15kg
Display Size: 1.1"
OSD Language: English
Resolution: HD
Model Name: MP3 Players
Color: Black
Color: Black
Working voltage: 12V-24V
USB output voltage: DC/5V
featues: Car Bluetooth MP3 supports hands-free calling
Support TF card and U disk extended play: yes
Dual USB: 3.1A

Enjoy Crisp Music via your car speakers, Listen to Radio, Make Hands Free Calls While Driving. You will hear your caller via your car speakers and you can talk back with the built-in mic on the carkit, Charge Your Phone at the same time

Click here to buy: https://soemall.com/collections/gadgets/products/bluetooth-car-hands-free-mp3-fm-transmitter-player-phone-charger-for-your-car

It's important to be comfortable with the controller. The best ones are comfortable to hold and have good range. You should choose a model that is lightweight and easy to use. Source to know about best quadcopter drone transmitter for fpv / non fpv drones (updated 2020).