These Impinj Monza 4QT Wet Inlay labels, AZ-H4A, are one of many Universal Smart Card designs offering a small RFID UHF antenna design in a range of packaging options. They are suitable for brand protection, supply chain management particularly in retail and garment tagging as well as pharmaceutical and healthcare.

The AZ-H4A tag has an antenna size of 18 x 71.5mm with an Impinj Monza 4QT Integrated Circuit (IC). This is according to the EPC Gen2 Standard / ISO18000-6C at a frequency between 860-960 MHz.

The AZ-H4A adhesive wet inlay label is made of a PET base material with a strong adhesive and release paper. They are not suitable for a metal surface. 

See datasheet attached for more information.