Connected alarm -10 pcs 125khz rfid proximity id card token tags key ring access system green Highlights generic brand 10 pcs 125khz rfid proximity id card token tags key ring access system green Description : Mini ID card keychain, 10 peices a bag, 5 bright colors for selection. High quality ABS material, water resistant and durable. With 5-10cm reading distance, fast and safe. Using EEPROM, can keep data more than 10 years. Each comes with key ring, easy to carry. specification: Material: ABS+Metal Size (LxW): 34x27mm/1.34x1.06inch, thickness is 6mm/0.24inch Operating frequency: 125KHZ Reading distance: 5-10cm/1.97-3.94inch Package includes: 10pcs ID Keyfobs Note: Each tag has been pre-programmed with a unique ID (not changeable), printed on the back. Due to manual measurement and lighting effects, there is a slight difference between the size and color of the above item and the actual item.