I was using this at my company, but I'm selling it because we're switching to another company's equipment. It contains a roll of paper used only for test prints, and there's plenty remaining. There are some minor scratches, but it was working fine until recently. The MP-B20 links with smartphones and tablets to achieve fast, high-quality printing. It's especially ideal for use in mobile environments. - Model: MP-B20 - Type: Mobile printer - Power button: Yes - Error button: Yes - Voltage: 3.7V - Current: 2.6A - Included items: Main unit only