BC91 Car Bluetooth Hands-free Calling PD36W Fast Charging with Atmosphere Light 1. High-performance Bluetooth 5.3: dual-core architecture, CVC intelligent noise reduction and noise elimination technology, smoother listening and clearer calls 2. Multi-protocol intelligent fast charging: multiple devices can be charged at the same time, PD36WandQC18W port charging 3. Bluetooth hands-free calling: built-in microphone, clear and smooth calls 4. USB plug and play: support WMA, MP3, WAV, APE, FLAC music formats 5. Multiple circuit protections, safer driving 6. Suitable for 12-24V mainstream cars Parameters: 1. Working voltage: 12-24V 2. PD interface: PD3.0, 36W max 3. USB interface: QC3.0, 18W max 4. FM transmission frequency: 87.5-108Mhz 5. Bluetooth version: 5.3 6. Receiving distance: 10 meters 7. Bluetooth sound processing: with DSP technology and A2DP Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.