It offer powerful stereo sound.With durable,waterproof fabric,this speaker features up to 12 hours of continuous,high quality audio playtime.Wireless Noise Cancelling Wirelessly connect up to 2 smartphones or tablets to the speaker take turns playing impressive stereo sound.Plus,take crystal clear calls from your speaker,thanks to the noise and echo cancelling speakerphone.Waterproof Durable No more worrying about rain or spills Flip 4 is completely waterproof you can even submerge it in water.