Feature 1Sensitive Induction: Smart chip and thickened premium copper wire make the RFID key fobs have sensitive induction, convenient and practical. 2Features: Key fob are compact and lightweight, easy to carry and store, just close to the induction area to open the door. 3Fully Equipped: Sufficient quantity to meet your daily needs, you no longer have to worry about old or damaged. 4Safe ABS: RFID proximity key fob are made of safe ABS material, environmentally friendly, waterproof, fall resistant, sturdy and durable. 5Application: Suitable for community access control, time and attendance, parking, etc, bringing you a reliable use experience.SpecificationItem Type:RFIDFobMaterial: ABSProduct Size: Approx: 28x35mm/1.1x1.37inFrequency: 125KHzErase: Do not erase .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List100 x RFIDFobNote1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.