Clear Disc transponders with electronics sealed in a transparent plastic coating that provides resistance to chemical exposure, shock, vibration and thermal fluctuations, both during and after production. Transponders HF 13.56 MHz ISO/IEC 14443 - NFC Forum Type 2. Chip Type: Mifare® Classic 1K (4 byte non-UID). Anti-collision. Operating Temperature: -20° to +60° C. Size Ø: 25 mm. MOQ: 2.000 units. Box Size: 500 pieces.