The Harman Kardon Go+Play Bluetooth speaker with 4 drivers fills your room with a powerful sound. The integrated subwoofers make bass tones sound extra deep. The battery guarantees up to 8 hours of listening pleasure. Simultaneously connect 3 smartphones or tablets to the speaker and have them alternately play different tracks. Use the USB port on the Go+Play to charge your smartphone while listening to music. Receiving a call while listening? Simply accept the call and conduct a hands-free conversation. Thanks to the integrated echo and noise suppression feature, you and the person on the line will understand each other flawlessly. You can also connect 2 Go+Play speakers to each other for a more powerful stereo sound.