Quick Details Place of Origin: Guangdong, China (Mainland) Brand Name: Card Cube Model Number: KLF-RW019 Product Name: Silicone 13.56mhz RFID Wristband Material: silicone/pvc/nylon Frequency: LF, 125KHZ Available chip: TK4100,T5577,EM4305 Molding: once molding Weight: about 8.5g packing: 100pcs/bag,1000 or 1500 pcs/carton Working temperature: -30 centigrade to +220 centigrade Shape: ellipse; roundness Reading type: contactless http://www.rfidcardcube.com