Green 100 Pcs 125Khz RFID Proximity ID Card Tags KeyChain

Operation Frequency: 125KHz
Detecting distance: 8-20cm
Color: Green
Size: 35mm (L) x 27mm (W)
Can be readed in RFID card
Water resistant
Each one comes with key ring
Each token has been pre-programmed with unique ID (can not change), which is printed on the back.
Package Including: 100xRFID Tokens