This portable speaker is certified iPX4 and has a splash-proof design that is perfect for any outdoor adventure! Connect the iBT330 wireless speaker to any compatible Bluetooth device and stream high quality audio from up to 100 feet away. Tune into FM radio, or listen to your own music collection via micro SD card and USB inputs. The built-in rechargeable ‘mega battery’ is designed to last up to 30 hours between charges (USB-C charging cable included). Compact and lightweight, this Bluetooth speaker includes a carry loop for convenient on-the-go use, too.