High-Bluetooth Version 5.0: The FM transmitter uses High-Bluetooth Version 5.0, which not only provides a stable connection, but also the echo cancellation reduces background noise for better hands-free calling. The upgrade broke the ability to connect 2 phones. 7-color light switch: short press "M" to change the light color at any time. Switch the sequence of red/orange/yellow/green/cyan/blue/purple/breathing lights to get visually stunning color display. The best way to increase ambient light in your car. Dual USB charging ports: The Bluetooth transmitter can automatically detect the charger type, USB1 5V/2.4A, USB2 QC3.0 fast charge, get the maximum charging current 5V/3A, save charging time while protecting the charging mobile phone. Support Siri/Google Assistant: FM transmitter supports mobile phone voice assistant Siri/Google to ensure driving safety. One-touch voice assistant function to make calls, send text messages or receive directions. Enjoy full voice control while driving. If you have any questions, please , we can provide satisfactory after-sales. - Serve. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.