The O'Neil 2t Printer quickly prints both standard receipts, barcoded receipts, and even pressure-sensitive "linerless" labels to your exact specifications from any computer. And, it is so small, light and durable, it can be taken anywhere, hooked to the belt of your field representative. It activates when the computer sends data and goes back to sleep automatically after the transaction, saving battery life. In addition, thanks to the printer's internal memory buffer, you never have to wait for a receipt to finish printing before performing other tasks.