· Any Micro-USB adapter (5 volts) for external power source
· Supporting 6 beats and 7 rhythms con-currently (42 combinational rhythms).
· Synthesized clear and loud sound with stereo phone jack
· Pause and Resume function
· Continuously adjustment volume of Tempo and Pitch sound
· 5 times longer battery-life
· 3x AAA batteries included 5 times longer battery-life.
