Operation Frequency: 125KHz
Detecting distance: 8-20cm
Color: Red/Blue/Yellow/Green/Grey(please leave message for the color,Default send blue)
Size: 35mm (L) x 27mm (W)
Can be readed in RFID card
Each one comes with key ring
Each token has been pre-programmed with unique IDcan not change, which is printed on the back.
Package Including: 100xRFID Tokens