Solar charging: The solar panel design eliminates the worry of power outages and allows for easy charging with light. Diaphragm colored light: Colorful diaphragm lighting and dynamic music complement each other, providing immersive sound quality and enhancing the atmosphere. Hands-free calls: Built in high-definition noise cancelling microphone for clearer calls. Multiple playback modes: Supports Bluetooth, radio, TF card, USB drive, and audio cable playback.<br><br>Parameters: Product Name: Portable Bluetooth Audio Rated power: 5W Bluetooth version: 5.0 Battery specification: 1500MA Distortion: Less than0.5% Signal to noise ratio: ≥85dB Frequency response: 60HZ-120KHZ Material: plastic colour: C-light blue<br><br>Package Contents: 1 x Mini Portable FM Radio 1 x USB Cable<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.