1、Drum: it contains 30 types of drums, support customizing drum, editing drum and saving drum by APP in real time, etc. It contains common types of rhythm, 4/4 , 3/4 , 6/8, etc., which can be customized and edited. Support single drum mode. The two foot switches in this mode are used as the TAP button and the drum foot switch (to achieve a more convenient operation method), so that you can be a flexible drummer. 2、Looper: 4 loops can be stored, the total recording time is up to 11 minutes. The recording time of single loop is up to 5 minutes. Each loop support unlimited overdub. Each loop can undo and redo last overdub audio unlimited times. Support using USB cable to export / import audio files with standard WAV format. One foot switch to control all LOOP functions: record, play, stop, overdub, undo, redo, deleted, etc. 3、High Precision Tuner: for note names with sharp / flat signs, the system defaults only to use # (sharp sign) to indicate. 4、Turner: wireless BT page-turner, it can select Landscape / Portrait state. 5、Practical and Easy-to-operate Effect Pedal: built-in tuner and BT pager, it can be used for outdoor performances, live broadcasts, practice and other scenes, apply to guitar, bass, microphone, arranger keyboard and other musical instruments. Specifications: Material: Iron Input: Standard 1/4" Jack-MONO/TS Output: Standard 1/4" Jack-MONO/TS LOOP Recording Capacity: 11 minutes Single LOOP Position Recording Capacity: 5 minutes Quantity of LOOP Storage Position: 4 LOOP Sampling Rate: 44.1KHz/24bit Power Supply 1: DC9V≥300mA Power Supply 2: USB 5V≥300mA Working Current: 90mA (DC 9V), 125mA (USB 5V) Input Impedance: 1M ohm Output Impedance: 100 ohm Item Size: 100 * 64 * 28mm / 3.94 * 2.52 * 1.10in Item Weight: 175g / 6.17oz Package Weight: 222g / 7.86oz Package Size: 11 * 8.5 * 3.6cm / 4.33 * 3.35 * 1.42in 1 * Effect Pedal 1 * Type C Cable 1 * Manual (English)