This car MP3 player adopts high-definition sound quality lossless playback, which effectively improves driving sound quality and supports wireless hands-free calls. Support PD30W fast charging protocol, with PD fast charging cable, the speed is increased by about 3 times, and the battery can be fully charged to 60% within 30 minutes. High-resolution, high-performance stereo, no interference, support lossless music such as MP3/FLAC/APE, and play in multiple audio formats. Bluetooth 5.1 compatibility ensures a stable connection, and echo cancellation reduces background noise for clearer calls. AUX audio support, lossless input, plug and play, more high-quality high-definition audio sources. Dual USB ports can charge two mobile phones at the same time, making travel easier. Power-off memory playback function, automatic connection after power-on, memory frequency and track, restart after power-off and start playing from the first sentence of the disconnected song. Simple operation, hang up the phone with one key, bid farewell to one-handed driving, and drive safely. Connect to the mobile phone wirelessly through MP3, and then send it to the car radio, compatible with various navigation software. Monitor the battery voltage in real time, the voltage status is clear at a glance, and it is always protected. It is suitable for 12V-24V mainstream models, compatible with a large number of APPs, the buckle area is enlarged, and the anti-slip springs on both sides are lengthened, the buckle is stable, and it is not afraid of bumpy mountain roads. Working Voltage: 12V-24V Bluetooth Version: 5.1 Transmission Frequency: 87.5-108MHz Output: USB-A: 5V/2.4A; USB-C: 5V/3A, 9V/3A, 12V/2.5A (PD30W) Material: ABS Color: Gray Size: 39 x 39 x 75.5mm Weight: 100g Package List: 1 x Car Bluetooth FM Transmitter