(Upgraded Version) Bluetooth FM Transmitter, GRDE Bluetooth Car Adapter Wireless in-car Receiver with Dual USB Car Charger and Hands-Free Calling for Samsung, Ipad, Smartphone Dual USB Charge Ports: Bluetooth fm transmitter for car support output totally 3.4A(2.4A/5V; 1A/5V) which can charge both devices simultaneously. Equipped with Intelligent charging IC, it will detect your devices automatically and achieve a quick charge for them. High Quality wireless Bluetooth car adapter: More stable FM signal, better anti-interference performance, enhanced sound experience, music lossless; Full FM radio frequency range from 87.5 to 108.0MHz, total 206 channels optional. Bluetooth connection is fast, not easy to drop signal. Hands-Free Call: Built-in Microphone, Bluetooth in-car receiver automatically switch from music playing to hands-free mode when answering a phone call when receiving calls. Just one click to hang up/off when receiving a call. Various Playing Modes: This Bluetooth car charger supporting Bluetooth function and mobile's A2DP function, work with USB flash dish(Up to 32G), and TF card. It can automatically play and transmit the MP3 files of USB driver and TF card. More Surprise: LED display numbers with voice prompts, it can detect and display the voltage of car battery when power is on(Pls note that the display color is orange)! Warranty:45 days money-back and 18-month worry-free Guarantee.