Supersonic SC-2328BT - BLUE Portable Bluetooth Speaker with True Wireless Technology (Blue)• Wireless speaker with rich stereo sound ;• Lightweight and portable ;• Bluetooth(R) 5.0;• TWS technology to connect 2 like speakers via Bluetooth(R) to double audio output (second speaker sold separately);• USB and auxiliary input compatible ;• Output power: 3 watts x 2 woofers for 6 watts total ;• Frequency response: 100 Hz to 20 kHz;• Rechargeable battery: 1,200 mAh ;• Operating voltage: DC 5 volt