Get great sound wherever you go when you have the Sony SRS-XB23 EXTRA BASS Portable Bluetooth Speaker. This small gadget is so compact and lightweight that you can easily toss it in a backpack or suitcase—or simply carry it. Additionally, this waterproof speaker has an IP67 rating that ensures it’s impervious to water and dust. So you don’t have to worry about dropping it on the ground while camping. Moreover, this portable speaker lasts for a full 12 hours. This..