The DS18 Storm portable Bluetooth speakers are made for all occasions with their IP67 waterproof/dustproof all elements rating. Manufactured with the best components in the market, they are lightweight and built to last- we never compromise on quality! They have big, rich, and clear sounds with full deep bass. They charge through a USB port and also provides various playback methods including Bluetooth, aux, and Mirco SD card support. Its ability to float on water makes it great for all occasions in or out of the home. The built-in microphone allows hands free calling and smart phone voice functions- allowing you to answer and hang up directly from the speaker. DS18 Storm doubles as a power bank to charge your device too! With 10 hours of continuous playtime- these speaker is your go to for any outing, party, even singing in the shower.