Features: Wide compatibility: compatible with most 125KHz RFID cards. Supports EM4100/EM410X, EM4305, T5577 and CET5200. Multi-scenario application: widely used in homes, communities, schools, offices, hotels, elevators and any other places that require security monitoring or access control. High-sensitivity reading and writing: Fast reading and writing speed, recognition distance of 1-5 cm, ensuring stability and reliability. Portable and practical design: smartphone size, comfortable to hold, powered by 2 AAA batteries (not included), easy to carry and ready to use. Specifications: Color: Blue Material: ABS Size: 11x7x3cm Package Contents: 1 x RFID Copier 5 x Buckle 5 x Blank White Cards Please Note: Only works with 125KHz frequency cards. Not for illegal copying. Check local regulations before use.