[1] RETRO STYLED AM/FM RADIO/MP3: With advanced Bluetooth 5.0 technology, USB, TF/SD card, and AUX support; connect this device with your devices in less than one second [2] SOLAR CHARGING + RECHARGEABLE: Radio + Mp3 player is equipped with a solar charging panel, so you never have to worry about charging multiple times. It also has a 1200 mAh rechargeable battery, ensuring you can enjoy uninterrupted music for up to 3 hours.