Frontech CASTER SW-0025 is an Outdoor Bluetooth Trolley Speaker with LED display. Additionally this speaker also has the extra features of a USB port through which you can play your music by connecting a Pen Drive, an Aux in slot to connect various other media devices, TF card reader with audio Playback & FM radio & a front mounted LED Screen. The speaker has an inbuilt rechargeable battery. It can be used for outdoor activities, picnic, travel, advertising campaigns and recreational activities.