Check the listing for details. Bluetooth In-Car Wireless FM Transmitter MP3 Radio Adapter Car Kit Charge 2 USB. Color: Black, Condition: New. Listed at 6.99 USD. Bluetooth In-Car Wireless FM Transmitter MP3 Radio Adapter Car Kit 2 USB Charger Product Features: • New Wireless Vehicle Bluetooth FM Transmitter Car Charger• 100% Brand new and high quality• Multifunctional: Wireless connection(Bluetooth), Build in microphone, FM transmitter+USB Charger+MP3 Player• Supports Bluetooth hand-free phone call , build-in microphone.• Noise cancelling technology that allow for clear and crisp phone calls and music.• With FM transmitter function, supports adjustment. Full-frequency covered 87.5-108.0MHz.• Allowed to accept MicroSD card up to 32G and play playing music on MP3/WMA form.• Come with 2 USB charging ports (5V/3.1A and 1.0A) for charging your smart phone or tablet.• The main button on the middle supports to change music or swap call, the near rotary knob is designed to adjust the volume. • Item comes with 30 days money back guarantee. Product Details: • Bluetooth version: V5.1• Bluetooth protocol: A2DP, AVRCP, HFP• Bluetooth band: 2.4 GHz-2.48 GHz • Bluetooth Transmission distance: 5m• FM frequency: 87.5-108 mhz• FM transfer distance: 2meters• Input voltage: 12-24V• Output: 5V/2.1A• Music format: mp3, wma If you have any question, please feel free to contact us before leaving neutral/negative feedback or opening a case. We strive to provide the highest customer service and we will solve the problem for you as soon as we can.