Calus D3 Pro Bluetooth Portable Speaker

Connectivity: Bluetooth, AUX/3.5 mm jack, USB, TF card Battery: Approximately 5400 mAh capacity Playback time: Up to 8 hours at ~50% volume Other features: Includes a built-in microphone for calls and voice assistant support Sound features: "Superbass," EQ button, and Dolby/Hi-Res audio support