1. 9 Band Radio with AM/FM & SW-1-7. <br/>2. The mini am fm portable radio speaker is unique memory delete design, allowing you to choose the favorite radio station freely. <br/>3. Frequency range: <br/>- FM: 88-108MHz <br/>- AM: 525-1600 kHz <br/>- SW1-7: 4.75-22MHz <br/>4. USB input: Allows you to play music from an external device. <br/>5. Built-in Micro SD card Slot: Allows you to play music from a Micro SD Card. <br/>6. Can use with BL-5C 3.7V 600mAh rechargeable battery (included), or 4.5V 3 x AA batteries (not included).