Features 1、Made of high quality ABS material and non‑slip back design. 2、USB interface, driver‑free, just plug and play. 3、Compatible for multiple systems, can connect computer and mobile phone. 4、Built‑in speaker controls buzzer and LED to indicate state of punching the clock. 5、Non‑contact card reading with fast speed, only need 0.2s. Specification Features: Made of high quality ABS material and non-slip back design. 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 Operating System: For 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 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 Package List 1 * Access Card Reader