Vidvie portable wireless speaker, model SP920. Key features include:
Connectivity: Bluetooth and AUX cable options.
Battery: Rechargeable battery providing up to 4 hours of playtime.
Additional Features:
Built-in microphone for hands-free calling.
FM radio.
TF card slot.
USB port for charging other devices.
Power: 50W.
Battery Capacity: 7.4V/4000mAh.
Waterproof: Yes.