Support Hands-Free Calling and Navigation Broadcast, this Bluetooth radio transmitter makes driving safer and more concentrated without diverting attention to frequently check the screen.

Utilizing innovative technology to enhance sound quality, unique CVC noise reduction technology cuts out 90% of outside field noise, and the built-in high-sensitivity microphone delivers high sound quality like playing a sound source.Two music playing modes: 1. Bluetooth (compatible with all Bluetooth devices such as Android and Apple smartphones) 2. You can also play music from USB memory (up to 32 GB).

This FM transmitter has a battery voltage measurement function, so you can plug this product into the socket, turn it on and the FM transmitter can automatically check the battery voltage.

Less than 12V: battery needs to be replaced.

12.0V-12.8V:Normal voltage of car without starting.

13.0V-14.8V:Normal voltage of the car started.

Lightweight 7.5x3.5x3.5cm / 3x1.4x1.4inch dimensions, compact and save space.