RGB Lights: 

This means the speaker has built-in LED lights that can change colors or patterns to enhance the visual experience.

Dual 52mm Driver:

This refers to the speaker's audio drivers. Having dual 52mm drivers typically means better sound quality and increased volume capability.

Call Function: 

This feature allows you to use the speaker as a hands-free device for phone calls. It usually includes a built-in microphone.

Multi-Connectivity Options: 

The speaker offers various ways to connect to audio sources. The options you mentioned are wireless Bluetooth, AUX (3.5mm audio jack), mSD (microSD card), and USB.

Built-in FM Radio: 

The speaker has a built-in FM radio tuner, allowing you to listen to radio stations without needing an external device.