- Square Bluetooth loudspeaker for perfect music enjoyment with the smartphone, tablet or notebook - anywhere and at any time ,- True Wireless stereo - turns mono into stereo: connect two loudspeakers via Bluetooth and position them anywhere in the room for true stereo sound ,- Direct MP3 audio playback via integrated microSD card slot ,- Battery-operated for complete mobility: the battery can be charged using a USB cable ,- Fast charging within 3 hours ,- With the integrated hands-free system, making phone calls in HD quality is very easy ,- 5-Watt music output with a powerful 40 mm bass driver ,- Wireless music playback for all Bluetooth-enabled devices ,- Supports the remote function for music control with Play/Pause/Next track/Previous track ,- With handy pull-out hanging loop