Fangrui Product Details Simple And Practical: Well-designed, Large Button Design, Convenient Input. Wireless Connection: Connects With Mobile Phone Via Bluetooth: Free From Cables And Improving Payment Experience. Comprehensive Adaption: Android, Ios; Exceptional Functions: Supports For All Types Of Payment Including Magnetic Stripe Card, Ic Card (contact Contactless) And Others. Security Guarantees: Built-in High-grade Security Chip, Dynamic State Psam Slot Configuration To Keep Safe Transaction. Processor : 32-bit Arm Processor Memory : 256kb Sram + 512kb Flash, External Storage:4mb Flash Display : 128*64 Lattice Lcd Display Magnetic Stripe Card Reader : Supports Iso 7810 /7811/7812, Supports Triple Track Two-way Manual Card Swiping(track 1/2/3) Ic Card Reader : Emv Chip Carder Reader, Supports Iso 7816 B/c Nfc Reader : Emv Contactless Compliant,supports Iso 14443 Type A/b, Supports Mifare Classic 1k/4k Battery : 350mah, 3.7v,1.295wh Keys/buttons : 10 Numeric Keys, 5 Function Keys, 1 Power On/off Key Audio : 1 Buzzer Ports