Compatible with invoice certified simple invoice invoice invoice (simple invoice) ● Supports shop operation by connecting with smartphone An advanced model that is compatible with various stores. ●Supports major credit cards, electronic money, and QR code payments. ● Meet a variety of customers payment needs. Cash Register + Smartphone = Sales Up! You can see sales on your smartphone. See profits on your smartphone. You can see sales on your smartphone from the go. CASIO ECR+ (Free App): Registering your product at the cash register or change the price with your smartphone. Smart work journals. You can also record photos and sales graphs. You can see the profits of "to make a money". CASIO ECR+ Premium; Comes with a rear display for customers.