Mini speaker system with built-in radio suitable for iPhone, iPad, iPod, mobile phones, Tablet PC, PC / Notebook MicroSD card slot and USB slot up to 32GB Headphone output with Ø 3.5 mm jack AUX input for connecting other audio devices Integrated rechargeable (~ 4 hrs.) Lithium rechargeable battery 600mAH (via USB cable) Play time with MicroSD card / USB: ~ 11 h / ~ 6 hours.. Durable aluminum housing in 5 trendy colors Easy to install and excellent sound quality Small and handy, ideal for traveling