Features:Identification card / 3.2-inch HD colour identification card, voice. Reading and writing frequencies supported: 125 kHz, 250 kHz, 500 kHz, 375 kHz, 625 kHz, 750 kHz, 875 kHz, 1000 kHz, 13.56 MHz (ISO1443A/B)Card reader support: EM4100 / EM4200, Mifare Classic, UID, Ultralight, Ntag203 Recording support: HID 1386/1326/1346, T5577, EM4305, UID Mifare. It can directly enter the number of the numeric key. 4 AAA batteries or USB power supply supported (batteries not included) Compact and lightweight for the laptop. Note that this can break most, but not all, card encryptions. Spcification:Area: up to 3 km (open)Supported operating systems:For Windows 98, ME, NT, 2000, XP, 2003, VistaFor Windows XP x 64,2003 x64, Vista x64For LinuxFor mac 10. 5, Mac 10.6For WinCE 5.0 (Windows embedded Compact)Package size: 17 * 8 * 3.5cm / 6.7 * 3.1 * 1.4inWeight: approx. 272 g Package list:1 x RFID NFC pocket copier reader1 x USB cble