Coolmusic DM20 20W Bluetooth Personal Monitor Amplifier Electric Drum Amplifier Speaker,Keyboard Speaker with USB Interface(Including E-Drum Noise-Reduction Cable)

【BT:Bluetooth】BTmeans Bluetooth.You can use your phone or I pad to play background music for your workout., 【Two speakers】6.5-inch woofer shows the bass better, 2-inch tweeter shows the treble well., 【Multipurpose amplifier】It can be connected to your electronic drum, keyboard or another instrument, 【Portable design】Small size and light weight. It can running to a family practice, lesson or any situation., 【USB interface】USB interface, which can insert U disk to play music