Features: 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 footswitches in this mode are used as the TAP button and the drum footswitch(to achieve a more convenient operation method), so that you can be a flexible drummer. 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 footswitch to control all LOOP functions: record, play, stop, overdub, undo, redo, deleted, etc. Tuner: it is a high precision tuner. for note names with sharp/flat signs, the system defaults only to use (sharp sign) to indicate.   Integrates multiple functional modules such as drum, looper, tuner, etc. It is a practical and easy-to-use effect pedal that will bring a richer expression to your performance and practice. Specifications: Material: Zinc alloy Power Input / Output: Standard 1/4" mono interface/TS Sampling Rate: 44.1k/24bit LOOP Recording Capacity: 11 minutes Single LOOP Position Recording Capacity: 5 minutes Power Supply 1: DC9V ≥300mA power adapter (internal negative and external positive) Power Supply 2: USB 5V ≥300mA power adapter Working Current: 90mA(DC 9V), 125mA(USB 5V) Input Impedance: 1M ohm Output Impedance: 100 ohm Item Size: 100 * 64 * 18mm / 3.94 * 2.52 * 0.71in Item Weight: 176g / 6.22oz Package Weight: 225g / 7.93oz Package Size: 11 * 8.5 * 3.5cm / 4.33 * 3.35 * 1.38in