Device features: - Wireless transmission of phone call and audio playback to the car stereo via FM Bluetooth - Hands-free mode, which automatically switches from music playback state when answering calls - Advanced bass enhancement technology activated with one button - Modern design with large LED display - Supports high-power micro- SD and USB card reading (max.32GB) - Dual USB output 5V / 3.4A (total) - Hands-free calls for safe driving - Latest Bluetooth 5.0 technology Specification: - Bluetooth version: 5.0 - Frequency range: 87.5-108 ,0MHz - Frequency stability: +/-10 ppml - Power supply: 12-24V - 2 USB outputs: 5V / 3.4A (total) - USB stick, TF (maximum): 32 GB - File formats: MP3/WMA/WAV/FLAC - Dimensions: 43.2 x 38.7 x 85.3 mm - Weight: 33.8g