Earfun SP200B UBOOM Portable Bluetooth Speaker

• 360° SOUND & GREAT VOLUME: Delivers loud and immersive stereo sound through 24W high-performance drivers; advanced DSP technology allow you enjoy extra deep & solid bass; built-in microphone for you to enjoy crystal-clear hands-free calls and voice assistant like Siri or Google Now.
• INDOOR & OUTDOOR MODES: The indoor mode enhances your music's bass, make you feel the bass reverberating in your chest; the outdoor mode with louder volume makes the speakers perfect for outdoor; two play modes allow you to enjoy the music anywhere.