I'm selling this because I no longer need it. Please refer to the details below. It has been used. It was given to me, so I don't know the exact frequency of use, but I was told it wasn't used very much. I will leave the judgment up to the buyer. This is a handheld marking machine (inkjet). The following content is quoted from the Amazon page: Completely portable high-resolution inkjet printer: You can print on anything using a variety of absorbent materials such as wood, cardboard, and cloth. The B30 series only works with water-based ink cartridges - Model: EB21B (Default model black EB21B is included in the package). Supports multi-printing: Text, time, numbers, QR codes, symbols, images, and logos. Supports import and export functions from the database and can print assigned codes (variable two-dimensional codes, barcodes, and text). Maximum print height: 1 inch / 25mm. Supports multi-line printing with adjustable print height. Design with a free layout, you can adjust the font and size of the characters. Easy operation: Place the roller of this handheld inkjet printer on the surface to be printed and press the print button. Then, as you begin to move the printer across the surface, inkjet printing will automatically occur. This printer adapts to the user's speed, producing the same imprint with fast or slow movements. (The included guide plate is properly positioned when printing on small bottles and containers.)