Hi Lo Co Portable Magnetic Credit Card Reader Stripe Swipe Magstripe Scanner 3 Tracks Mini Smart

Reads and writes up to 3 tracks of data;Read and write success there will be music to remind, success is short, the failure is long.
Plug-and-play USB port;
Functions: Read, Write, Copy, Erase, Compare, Save to File, File to Write. o It reads and writes up to 3 tracks of data, decoding/encoding and verifying up to 3 tracks of data simultaneously. single direction swipe.