Amazon offers the JLab Audio Crasher Loud Portable Bluetooth Stereo Speaker with 18 Hour Battery - Sport Yellow/Gray for $19.99.
2 Drivers & Rear Passive Subwoofer
Bluetooth 2.1, 30-Feet Range, 1500mAh Battery, 18 hours (Medium Volume)
90dB Volume Max
Full Size USB Port, Aux Connection
Speaker Phone with Mic [ Shop Now ]