ACEFAST PWRup B23 is an in-car FM wireless transmitter and MP3 player with a total charging output of 48W. It streams audio wirelessly from your phone via Bluetooth or supports direct playback from a USB flash drive or TF card with a capacity of up to 32GB. The two charging ports provide USB-C PD 30W and USB-A QC 18W outputs, with support for PD3.0 and QC3.0 fast charging. Hands-free calling lets you make and receive calls while on the road.

The LED display shows the FM frequency and your car battery voltage. A multicolor ambient light adds style and makes the device easier to use at night. The transmitter is compatible with vehicles using 12V or 24V power systems and includes multiple safety protections.