【FOUR MODES】 Tuner, Drum Machine, Loop, Drum Machine and Loop Mixed Mode. The volume of the drum machine and loop can be adjusted separately. 【PRESET PROGRAMS & SHARING】 Built-in 30 preset drum patterns, supports app customization, editing, and saving of drum patterns. Players using the same product can also share each other's drum codes via the app. 【LOOP STORAGE PEDAL】 Four loop song storage locations with a total recording time of no more than 11 minutes. The maximum recording time for a single storage location is 5 minutes. Each song can be recorded with unlimited overlapping tracks. 【LOOPER WITH SCREEN】 LED indicator and digital display make recording more intuitive and convenient. 【HIGH-QUALITY CONFIGURATION】 All-metal shell, strong and durable. Two power supply modes: DC 9V 300mA (negative inside) and USB 5V 300mA.