brand new and high quality Introduction: T5577 card is a new one cards , tuning frequency can be from 100kHz to 150 kHz, encryption, data for 330,64 , have aroused response function, and stable , the normal and E5550/E5551, and expand .As a typical low frequency, encryption, both cards, T5577 will has a great application prospect in the market. Features: Works excellent, epoxy resin encapsulation, ultra welding, product waterproof anti-throw. The copper wire coil, frequency stability, that card read distance,in bad use environment also can work normally. Waterproof, anti-fall, corrosion resistance. Light and small, easy to carry. Widely used for access control, bus payment, parking management, entity authentication, atnce management, card payment, product entification, etc. Card only, other accessories demo in the picture are not included! Specification: Material: PVC Chip: T5577 Working Frequency: 125KHZ Memory Capacity: 330Bits, 10 Partitions, 8-digit Password Reading and Writing Distance: 3-10cm(1.18-3.94in) Wiping Life: 100,000 Times Data Retention Time: 10 Years Color：White Diameter: 25mm/0.98in Quantity: 1 Set Note: 1.No retail package. 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 10 Pcs Card