Portable Bluetooth Speaker ,Sorker Slim 4 in 1 wireless speaker with adjustable EQ - Black The frist Spearker with adjustable EQ.5 EQ preset modes: Pop, Rock, Class, Flat, Jazz, Vocal 5 Modes: Bluetooth wireless, Speakerphone, AUX, USB Drive ,and SD/TF Card compatibility Simple and easy to operate key design.Through 10000 to touch test,wear non-slip,temperature,long service life High-Fidelity Sound,3W*2 Stereo speakers Built-in. Lasting power,long battery life.Two power modes,built-in lithium secondary medium volume with 8 hours of playack capability,suitable for any occasion