Wireless Bluetooth streaming Wirelessly connect up to 3 smartphones or tablets to the speaker and take turns playing powerful stereo sound. 6000mAH power bank Built-in rechargeable Li-ion battery supports up to 20 hours of playtime and charges smartphones and tablets via USB. Speakerphone Take crystal clear calls from your speaker with the touch of a button thanks to the noise and echo-cancelling speakerphone. Waterproof Wireless Bluetooth Power bank to charge your devices Voice assistant integration