BYSECUR mifare 13,56 mhz proximity smart silicone wristband. assorted colour, capacity 1k. read/write 100,000 times, reading range 0 - 100mm depending on the reader power, water and dust resistant: ip65. read/write 100,000 times, application: swimming pools, gyms, cold storage warehouses, access control. ticketing for events, suitable for humid environments..., various colours. inner diameter 62cm