Smart Card/Tag RFID T5577 125Khz EM4100 T5577 Chip Rewritable Proximity Rewrite ID Blanks

Writable & Rewritable：They are empty RFID Cards/tags without data. They can repeatable reading and writing 100000 times. You need to write data to them for use. Compatible with RFID duplicators of 125kHz frequency, Features: Waterproof, dustproof, durable, Frequency /Chip: Frequency 125kHz, chip t5577, sensing distance 1-4 inches, Cards or Tags, Material: The inner coil is made of high-quality pure copper, the shell material is ABS plastic, waterproof and durable, suitable for making new tags and spare tags