Tested and working. Indoor use only. No smoking, no pets. Used indoors for a few months under normal conditions. Velcro attached. There are no major scratches, but the knob was broken, so I bought and installed a new one. The new knob has markings, but the original ones don't and are the type that you turn clockwise or counterclockwise. 【Multi-function Looper】 The Flamma FS21 is a guitar effects pedal with loop and drum functions. It supports improvisation and the creation of rhythm tracks in music production and performance. 【Intuitive Operation】 With two control knobs and a pedal switch, it's easy to operate. You can intuitively adjust the rhythm and volume, allowing you to focus on your performance. 【High Connectivity】 With a USB-C connection, it has high compatibility with devices, and with mono input and stereo output, it can be connected to various devices. - Brand: Flamma - Model: FS21 - Type: Looper/Drum - Number of Control Knobs: 2 - Connection Terminals: USB-C - Input/Output Terminals: Input (Mono) / Output (Stereo) Thank you for viewing.