Feature:1. Stable Performance: Contactless card reader is suitable for Android ( for VIVO, for Xiaomi), support for WinXP/for Win7/for Win10 systems, etc. (need to pass OTG transmission line).2. Plug and Play: This smart card reader connects directly to your phone to use, requiring no drive or transmission line.3. Buzzer and LED Indicator: Built in buzzer can sound up to 20dB, there will be a sound prompt when the card is activated. In addition, LED indicator is located on the right side of the card reader, blue means the standby state.4. Compact and Durable: Scratch resistant and wear resistant, exquisite and compact design makes the card reader easy to carry and use.5. Application Scope: Can be widely used in conference sign in, home school pass, access control and other application fields.Specification:Item Type: Card ReaderMaterial: ABSModel: R65Color: White Communication Interface: Type-C InterfaceOperating Frequency: 125Khz (R65D) / 13.56mhz (R65C)Card Reader Type: TK4001, EM4100 And Other ID Cards (R65D), MF\S50\S70 And Other ISO14443A Agreement Label (R65C)Card Reading Distance: 0~30mm/0~1.2in (Front/Back), 0~10mm/0~0.4in (Side Reading)Card Reading Time: <100msCard Reading Speed: 0.2sRead Card Spacing: 0.5sOperating System: For Win XP\For Win CE\For Win 7\For Win 10\For LIUNX\For Vista\For AndroidStatus Indicator: 2 Color LED (Blue Is Power LED Indicator, Green Is Status Indicator).Package List:1 x Card Read