Check the listing for details. Square A-SKU-0047 Mobile Card Reader with 3.5mm Jack, White. Condition: New, Made in China. Listed at 8.00 USD. The Square A-SKU-0047 Mobile Card Reader with 3.5mm Jack in white is a compact and portable device designed for small businesses and on-the-go transactions. Compatible with iPhones, this mobile card reader offers wireless connectivity for a seamless payment process. With the trusted Square brand name, users can expect reliable performance and easy integration into their existing systems. Perfect for businesses in the retail and services industry looking to streamline their operations and improve cash flow.