Features: 1.Made with premium ABS material for light weight and maximum durability. 2.Stable and secure data transmission, very easy and convenient to use. 3.RFID cards, each RFID has a separate ID. 4.Each comes with key ring included. 5.Waterproof design, high quality, good reliability. Specification: Features:_x000D_ _x000D_ Made with premium ABS material for light weight and maximum durability. _x000D_ Stable and secure data transmission, very easy and convenient to use. _x000D_ RFID cards, each RFID has a separate ID. _x000D_ Each comes with key ring included. _x000D_ Waterproof design, high quality, good reliability. _x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Material: ABS_x000D_ Color: Blue_x000D_ Frequency: 125 kHz_x000D_ Chip type: EM4100, tk4100_x000D_ Operating temperature: -40C - 85C_x000D_ Size: 3.3*0.4cm/1.3*0.2in_x000D_ Applications: fit for public transportation, parking, identification, time and attendance systems, booking, payment cards, product identification, etc._x000D_ _x000D_ _x000D_ Note: This card is only used for card reading, not for card writing._x000D_ _x000D_ Package List:_x000D_ 100 * RFID Card