The ACR3901U-S1 Secure Bluetooth™ Contact Smart Card Reader combines the latest technology in the smart card reader industry with Bluetooth™ connectivity. This compact wireless smart card reader blends sophisticated technology smart card applications installed on Bluetooth devices such as smartphones and tablets. Bluetooth® interface USB 2.0 Full-Speed interface Power supply: Battery-powered (Li-ion battery recharged via Micro-USB port) USB power supply (via PC connection mode) Supports ISO 7816 Class A, B, and C (5 V, 3 V, 1.8 V) cards Supports microprocessor cards with T=0 or T=1 protocol Supports memory cards Supports (protocol and parameter selection) Short-circuit protection Supports -128 encryption algorithm Supports PC/SC Supports CT- (via PC/SC ) USB firmware upgrade capability Supports Android™ 4.3 and above Supports iOS 8.0 and above Baud rate: 1 Mbps Connector type: Micro-USB Protocol: USB Rate: USB Full Speed (12Mbps) Power: Powered by USB port Card Slots: 1 full-size card slot Standard: ISO 7816 Parts 1-4, Class A, B, and C (5V, 3V, 1.8V) Protocol: T=0; T=1; Supports memory cards Color: White Material: plastic Package Contents: 1 * Reader/Writer Device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.