Vidvie SP919 Portable Wireless Speaker.
Here's some information about this product:
Model: SP919
Connectivity: Wireless (Bluetooth V5.3 mentioned for a similar model, likely applies to this one too)
Power: 30W (15W * 2)
Battery: 2000mAh, providing up to 12 hours of working time.
Features: Multiple lighting modes and potentially a built-in microphone for hands-free calling.