... Read/Write 3.Contactless tag,Proximity tag Silicon RFID Wristband For SwimmingMaterial:100% silicon Color:blue,red,black ,white ,yellow ... ,gray,pink,green,ectFeture1,colosed-loop wristband,elastic, easy to carry ,waterproof,moistureproof,shockproof,High temperature resistant2,Low frequency ... temperature:-50°C~210°C6,application:widely used in swimming pool ,the cold storage,the wet environment,even in ...