【QC 3.0 Fast Charging】The Bluetooth FM transmitter has two USB ports that can charge two devices simultaneously. One is a USB QC 3.0 fast charging interface, which is 4 times faster than standard chargers (compatible with: QC2.0, FCP Warwick, Samsung, HTC), the maximum charging efficiency is over 80%, allowing your device to fully charge in a short time. 【Bluetooth Hands-Free】Advanced Bluetooth 4.2 technology enables a more stable connection and faster transmission. When connected to Bluetooth, the built-in microphone with CVC noise reduction technology provides you with clear speakers. Simply press a button to answer/end/reject calls/redial the last call. 【Multiple Music Playback Modes】Enjoy lossless stereo music transmission. This Bluetooth FM transmitter provides richer stereo and duplex sound with its hi-fi system, allowing music playback via Bluetooth/USB drive (≤64G)/TF card (≤64G) connection. Supports MP3/WMA/WAV/FLAC/APE files. It provides you with fantastic car music to make your journey more interesting. 【Easy to Use】① Insert it into the cigarette lighter socket. ② Turn on your car's FM radio and select the empty frequency. ③ Set the same frequency as the transmitter (87.5-108.0 MHz). ④ Connect your phone to the transmitter (named C57) via Bluetooth. Then you can enjoy uninterrupted music. Package Contents: 1 x Car Charger