Size
25mm 28mm 30mm ,35*28mm, 40*31mm,etc
Color
White blue pink green purple black grey,etc
Printing
Laser printing logo, serial numbers
Reading distance
0-20cm(depend on the reader and environment)
Keyword
waterproof abs uid programmable rewritable em4305
Application
Access control, Identification,Attendance
Product name
Contactless Em4200 Rfid Key Fob Access Control Card T5577 Keyfob