The E850 is a handheld wireless POS terminal developed based on UNIMARS-III, a unified platform for electronic payment. The device is equipped with high-performance processor and high-capacity memory, and supports for various types of cards, such as magnetic stripe cards, IC cards, and radio frequency cards. The 2.8-inch LCD screen can display more than 4 lines of text and ASCII visual characters. The product includes a thermo printer and supports many means of wireless communication such as 2G / 3G / 4G, Wi-Fi, and Bluetooth, effectively bolstering the continuous enrichment of financial applications. E850 has obtained a full range of industry certification, and supports for domestic data encryption algorithms. It complies with PCI design specifications to ensure transaction security. This product has been widely used in banks, shopping malls, hotels, restaurants, and other places that require electronic transactions.