Bluetooth-wirelessly connect up to 3 smartphones or tablets to the speaker and take turns playing powerful stereo sound。Built-in rechargeable Li-ion battery supports up to 3-5 hours of playtime and charges smartphones and tablets via USB。Take crystal clear calls from your speaker with the touch of a button thanks to the noise and echo-Cancelling speakerphone IPX7 Waterproof Build your own ecosystem by connecting multiple JBL Connect enabled speakers together to amplify the listening experience。Access Siri or Google Now from your JBL speaker with a simple button press。