iTour BOOMThe iTour-Boom is the newest marvel in the lineup of portable speakers. Delivering the BIGGEST BASS, THE LOUDEST SOUND, AND THE HIGHEST CLARITY. Play the iTour boom off any of your devices or pop in an SD card for ultimate WIRELESS portability.iTour-BOOM is the best in class; it will never dissapoint with it"s amazing sound quality and portability. The crisp clean quality of it"s built in PO BASS system delivers your music the way it was meant to be heard. Ideal for all of your devices and replacing your home speakers, you will never need another portable speaker.All speakers have built in iON lithium rechargable batteries so you never need to buy batteries. Listen for hours and recharge in about an hour! Connect to your favorite music devices such as: Stereos, Mp3 Players, Ipods, Ipad, Phones, Game Systems, TV"s, Computers, Laptops, Electric Guitars, and more! SD card is not included.