•Dual USB Port for wide compatibility. The 20W USB-C Port with Power Delivery charges your mobile device up to 50% in 30 minutes when used with a USB-C Charging Cable •Equipped with a built-in microphone for a better hands-free call. Google Assistant and Siri Compatible •RGB LED : Switch between 7 single colors and rainbow colors while in use •3D SURROUND brings you a full range and optimized sound. •Automatically detects the voltage when car starts and is displayed on the LED Display" Hit the road with the ultimate driving companion: Monster FM transmitter equipped with dual-port USB charging and immersive 3D sound and RGB LED.This nifty device bridges the gap between your car's radio and your personal music collection on your smartphone or MP3 player. Just plug it in, tune to an unused FM frequency, and voila – your favorite playlists, podcasts, and audiobooks are broadcasted directly through your car's speakers, all while keeping your devices fully charged. Dimensions (Overall): 8.5 Inches (H) x 4.3 Inches (W) x 1.8 Inches (D) Weight: .3 Pounds Package Quantity: 1 Material: Metal, Plastic