Specifications: Model: AP-09 Material: Aluminum Alloy Maximum Recording Time: 10 Minutes Maximum Overdubbing Times: Unlimited Input: 1/4″Monaural Jack (Impedance: 470K Ohms) Output: 1/4″Monaural Jack (Impedance: 100K Ohms) Working Current: 94 mA Power Supply: DC 9V 500mA Adapter (Not included) Item Size: 7.5 * 4 * 4.5cm / 3 * 1.6 * 1.8in Item Weight: 145g / 5.1oz Package Size: 10.5 * 6.5 * 5cm / 4.1 * 2.6 * 2in Package Weight: 222g / 7.8oz Note: The power adapter is not included. Only WAV audio file can be uploaded to the looper from the computer. You can download the software at http://13723663.s21d-13.faiusrd.com/0/ABUIABBLGAAg_83X0gUo8sSG1Qc?f=loopersoftware1.7.exe&v=1515579131 Please use the DC 9V 500mA power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package List: 1 * Guitar Effect Pedal 1 * USB Cable 1 * User manual(English & Chinese)