Bluetooth 5.0 FM Transmitter for Car,Bluetooth Car Adapter With Dual USB Charging Car Charger MP3 Player,Hands Free Calling Feature: Dual USB fast charging: compatible with a variety of charging protocols, dual USB interfaces can be charged at the same time, up to 3.1A, and smart shunt technology can quickly charge without harming the phone. [Advanced Bluetooth 5.0 technology] The built-in Bluetooth 5.0 chip provides a stable connection for playing music and making handsfree calls through FM frequencies, allowing faster pairing with compatible devices, and the built-in microphone can easily answe-r or end calls with button. No need to hold the phone. This hands-free call car accessory makes your driving safer. More auxiliary playing modes: plug and play, lossless audio quality, power off memory support, USB disk compatibili-ty , multiple playing modes. Navigation voice broadcast: mobile navigation broadcast, built-in microphone, supports smart voice navigation of mobile phones, and its accuracy is the sound of various mobile phone applications. button operation: This product is equipped with a Button, built-in microphone, clear and conversation, button hands-free, and safer driving Product parameters: Product type: car Bluetooth player Frequency response: 20HZ-15khz FM transmission frequency: 87.5~108.0Mhz Bluetooth version: 5.0 Transmission distance: 5-10m Working voltage: 12V-24V Music format: MP3/WMA/FIAC/MAV Package size:13X6.8X4.8cm/5.12x2.68x1.89inch Gross weight:54lb/0.12lb The Package Include: 1x Host 1x Manual