Features:100% Brand NewChip Model:125KHz T5577Working frequency: 125KhzRead and write:> 10000 timesDetecting distance: 0-8cmMaterial: PVCDiameter 38MMThickness: 0.3mmPlease notice: The chip is blank, so it can not be read before you write a data to it.Characteristics: Waterproof, moisture-proof and vibration-proof,Anti-corrosion,High- temperature resistance,Nontoxic, Environmental,Harmless to the bodyApplicable to: Access CardReading and Writing Time: 1msNo external pwer required.Easy to carry,small and exquisite appearance, pratical and durable.Application:Access control attendance, hotel locks, staff attendance, school campus access, membership management, payment control, identification and security systems, parking lot entry and payment, social security management, transportation, municipal and ancillary service.Package includes:5pcs