Features: Super mini size, made of aluminum alloy, convenient and durable. With record(up to 10min), overdub(unlimited), undo, redo and delete functions. Simple operation, one key to achieve almost all of functions. With one knob for adjusting the output volume. One LED light for showing the working status. True bypass function for protecting the integrity of signal. Comes with a USB cable for uploading and downloading audio file from PC. Specifications: Model: AP-09 Color: White Material: Aluminum Alloy Maximum Recording Time: 10 Minutes Maximum Overdubbing Times: Unlimited Input: 1/4Monaural Jack (Impedance: 470K Ohms) Output: 1/4Monaural Jack (Impedance: 100K Ohms) Working Current: 96mA Power Supply: DC 9V 500mA Item Size: 7.5 * 4 * 4.5cm / 3 * 1.6 * 1.8in Item Weight: 145g / 5.1oz Package Size: 10.6 * 6.5 * 4.5cm Package Weight: 217.7g Note: Only WAV audio file can be uploaded to the looper from the computer. 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)