DESFire® EV2 proximity metal keyfob (13.56 Mhz) 4Kbytes. It is sold in quantities of 25 and, as with other CDVI cards and badges, you can personalize the TAG with your company logo (minimum order of 1,000 units). The tag is compatible only with Krypto. MOQ for non-customized units: 25 pcs.