Built-in microphone LED display and small Bluetooth headset. Built-in MP3 player supports MP3 music or audiobook format playback. It transmits the sound wirelessly to your car radio. Storage via USB Flash Drive port. 2x USB charging ports (5V / 2.1A, 5V / 1A). Bluetooth Ver 4.2, transmission distance up to 5 meters. Bluetooth profile: A2DP, hands free. Includes 1x Mini Bluetooth headset for hands-free calls for private conversation. Charges USB devices via USB port Cell phones (cable not included). Compatible with: iOS / Android / Pad (For iPhone / Samsung / Huawei / Xiaomi / Meizu / LG devices. Transmitter operating voltage: 12V-24V. Handset operating voltage: 3.3V. Handset charging time: 30 minutes-1 hour. Screen size LED: 1.0 inch.Operation mode: Directly plug into the cigarette lighter socket.Support audio format: MP3.Frequency: 20Hz/-15Khz.FM: 87.5MHZ-108.0MHZ. Bluetooth headset range up to 2 meters.
