TENSWALL IC Recorder with Recording and Playback Function 16GB USB Connection Supported 《With LED Display》 - Brand: TENSWALL - Model Name: IC Recorder - Features: Recording and Playback Function - Button Functions: REC, SAVE, MENU, VOL, UP, DOWN - Connectivity: USB Connection ☆ I only used it once for testing and have been storing it at home. I am selling it because I don't use it. No instruction manual included.