Technical Specifications Dimensions: 98mm (L)×65mm (W)×12.8mm (H) luj: 70grams Interface: USB Full Speed Operating Distance: ≤50mm Supply Voltage: Regulated 5V DC Supply Current: 200minyuam(operating); 50minyuam(standby); 100minyuam(normal) Operating Temperature: 0°C~+50°C Operating Frequency: 13.56MHz Standards/Certifications: ISO14443 1-4, CE, FCC, RoHS Compliant Operating System Support: Windows 2000, 2003, XP32, XP64, Vista 32 and Vista 64