1、Plug and play, it can be directly connected to mobile phone card reader, no driver or transmission line required. 2、Superb craftsmanship, the surface is eco-friendly frosted, and the outer casing is made of PVC material , scratch-resistant and durable. 3、Stable performance and strong compatibility, suitable for Android (for Samsung, for Sony, for VIVO, for Xiaomi), for Windows system: support for WinXP / for Win7 / for Win10, etc. (need to be transferred via OTG line) 4、It can read and transfer data stably and quickly, with Micro USB connector and non-contact card reading function, high transmission efficiency. 5、Built-in buzzer design, sound up to 20db, effective prompt. 6、Exquisite and compact styling makes it convenient to carry and use. Condition: 100% Brand New Item Type: Card Reader Material: PVC Optional Color: White, Black Induction Distance: Approx. 0-8cm/0-3.1in Power: 0.5W Working Voltage: 5V Working Current: 100mA Working Frequency: 125khz Support Protocol: ID Card, such as TK4001 and EM4100 Working Temperature: -10 ℃-60 ℃ Card Reading Distance: Approx. 0-30mm/0-1.2in (Front / Back), 0-10mm/0-0.4in (Side Reading) Card Reading Time: <100ms Operating System: for Android (Test Brand: for Samsung, for Sony, for Vivo, for Xiaomi) For Windows System: for Winxp / Win7 / Win10 Etc. (need to be transferred via OTG line) Status Indicator: 2 Color LED ("blue" Stands for Power LED, "green" Stands for Indicator) Output Format: Default 10 Digit Decimal (4 Bytes) 1 x Card Reader