The 13.56 MHz Near Field Communication (NFC) antenna is compatible with the Argon, and Boron. The antenna is a circular RoHS compliant printed circuit board (PCB) with a 35mm diameter and a cable length of 100mm, terminated with a U.FL connector. Features & Specs * Circular PCB, 13.56 MHz NFC antenna * Frequency / band: 13.56 MHz * RoHS Compliant * Dimensions: Circular with a 35 mm diameter * Cable length: 100 mm * Connector type: U.FL connector compatible with the Argon, Boron, and Xenon