Advanced Bluetooth 5.3 Technology: RM170 FM transmitter built-in advanced Bluetooth 5.3 chip provides a more faster pairing with compatible devices and stable connection, built-in microphone supporting smart voice navigation, hands-free calling & MP3 player from your phone. Super Fast Dual Charging: RM170 Bluetooth transmitter provides 2 of 20W PD ports for fast charge, this car transmitter can charge two devices at the same time, output 5V 3A/9V 2.22A/12V 1.67A max, compatible with Samsung, iPhone, Google, smartwatches or tablets from 0 to 50% half an hour. Hi-Fi Music: RM170 Bluetooth car adapter Bluetooth 5.3 provides stable connection, without distorted for Hi-Fi stereo music via Bluetooth. This Bluetooth car adapter allows you to stream lossless music from any Bluetooth-enabled device. Wider Wireless Reciever Range: RM170 wireless FM transmitter radio reciever provides wider range from 87.5MHz to 108 MHz, you can get more stable and consequent music experience without inter