PVC material, Built-in UHFRFID chip - Adopt PVC raw materials, waterproof and durable, built-in UHF chip, reading distance of about 25m, sensitive sensitivity, stable reading and writing. Protocol:ISO 18000-6C EPC Class Gen2 Frequency:860-960Mhz Working mode:Passive Chip life:Write 100,000 times, data preservation for 10 years Chip memory:128bit EPC Working temperature:-35℃ to and85℃ Reading distance:0-25m Quantity:50PCS/100PCS Colour:White Material:pvc Size:85.5x54x0.8mm Package Contents: 50 x White Card / 100 x White Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.