The NYNE NB-250 Bluetooth speaker is well prepared for a never-say-die lifestyle. Sling the provided shoulder strap over your shoulder and take it to the summer beach party, an impromptu poolside celebration, or your friend’s surprise birthday bash. The NB-250’s fully rubberized cover repels water splashes and the occasional spilled drink. With 8 to 10 hours of Lithium Ion battery power, you and your friends can dance into the wee hours without fear of a sudden shut down. All of this while simultaneously charging your mobile device through a convenient USB port. Incredible! Whatever your Bluetooth-enabled device – be it iPod, iPhone, iPad, MP3, smart phone, or tablet – you’re good to go. Built-in dual passive radiators and a DSP dynamic control chipset provide super high quality sound.