The Axess SPBT1033 is a great travel speaker. The small size yet amazing sound quality will keep a party going anywhere it is. The 4 inch subwoofer has a 7 watt out put that provides rich sound. This speaker has the ability to wirelessly stream music through Bluetooth with other Bluetooth enabled audio devices. There is also a micro SD card slot and Aux line-in if the media player doesnäó»t have Bluetooth. The strap makes it incredibly easy to grab and go. Portability is key when traveling, with the Axess SPBT1033 get the best quality sounds in a small easy to carry package.