... Different chips 125KHz, 13.56MHz, shapes available, High quality ABS/PC Ultrasonic plastic welding Colors: Available Red, black, yellow, blue, grey, green ... , EM4450,NXP Hiatg1, Hitag2, HitagS256, HitagS2048, Atmel temic 5567 IC available at 13.56MHz nominal:NXP Mifare1 S50, Mifare1 S70, Desfire ... Control, Member Club Management, etc Oem welcome. RFID key fob all chips available EM4100