T66 Car Bluetooth Charger with MP3 Player, FM Transmitter, and Hands-Free Calling Details: 1. Material: ABS 2. Compatible with 12-24V vehicles including cars, SUVs, trucks, large trucks, off-road vehicles, and buses 3. Supports U disk and TF card (up to 32GB) 4. Voltage: DC 5V 5. Current: 3.1A 6. Display: LED screen 7. Effective wireless range: up to 10 meters 8. Dimensions: 85 x 47 x 46mm 9. Weight: approximately 30g Features: 1. CVC intelligent noise reduction for clear calls 2. Dual USB ports with 3.1A total output for fast charging 3. Bluetooth 5.0 for fast, stable connectivity; supports hands-free calling and music streaming; compatible with Android and iOS devices 4. Plug-and-play support for U disk and TF card 5. Wide device compatibility 6. Automatic volume adjustment: reduces music volume during navigation prompts and restores it afterward 7. Power-off memory playback resumes from the last position after power cycle 8. Built-in smart chip with multiple protections: overvoltage, undervoltage, overload, reverse polarity, overheating, short circuit, overcurrent, and electromagnetic interference protection