Features: Made of high quality ABS material and non-slip back design. USB interface, driver-free, just plug and play. Compatible for multiple systems, can connect computer and mobile phone. Built-in speaker controls buzzer and LED to indicate state of punching the clock. High reading speed increases the efficiency of punching the clock to a great extent. Non-contact card reading with fast speed, only need 0.2s. Specification: Condition: 100% Brand New Material: ABS Color: White Type: Non-contact Card Reader Support Card Type: 125Khz/ID Card, 13.56Mhz/IC Card (Optional) Operating System: Windows98\XP32\XP64\2000\CE\7\ME\NT\LIUNX\Vista32\Vista64\Android Support Agreement: 14443A agreement Card Reading Distance: 0~80mm Card Reading Time: <100MS Card Reading Speed: 0.2S Card Reading Interval: 0.5S Communication Interface: USB interface Size: 104 * 68 * 10mm/4.1 * 2.7 * 0.4in Power Supply: USB Weight: 60g/2.1oz Working Temperature: - 20℃~ +85 ℃ Working Humidity: 5%~95% Working Voltage: 5V Working Current: 100mA Status Indicator Lamp: 2 colors(red is power supply LED, green is status indicator lamp) Package Size: 12.5 * 9 * 4cm/4.9 * 3.5 * 1.6in Package List: 1 * Access Card Reader .