Product Description：
Material: silicone
Feature: Waterproof, Moistureproof, Bally Flex, Durable
Size (inner diameter): Adjustable
Colour: red, pink, bule, green, yellow, orange, white, black, purple or pantone color
Radio frequency: 125KHz/ 13.56MHz/ 915MHz
According to: 18000- 2/ ISO14443A/ ISO15696/ 18000-6B
Working temperature: -30°C~220°C
Logo: customize
Packing: 100pcs/polybag, 1000pcs/carton
http://www.heroncore.com