1、Card reading/writing function: Reading and writing can circulate more than 10 thousand times. 2、Small size, conform to ergonomics, with built-in LED light and buzzer, convenient for carrying and daily usage. 3、Clear function button design, makes it more simple to operate. 4、Users can define access conditions and password by themselves. 5、Frequency can be automatically detected, and 125KHZ, 250KHZ, 375KHZ, 500KHZ, 13.56MHZ frequency is applicable. Features: Card reading/writing function: Reading and writing can circulate more than 10 thousand times. Small size, conform to ergonomics, with built-in LED light and buzzer, convenient for carrying and daily usage. Clear function button design, makes it more simple to operate. Users can define access conditions and password by themselves. Frequency can be automatically detected, and 125KHZ, 250KHZ, 375KHZ, 500KHZ, 13.56MHZ frequency is applicable. Supports EM4305, EM5200, EM8800, T5577, ZX-F08 UID and supports ISO 14443 Type A. Specifications: Condition: 100% Brand New Material: ABS Size: 11*4.6*2cm/4.3*1.8*0.8in Sensor Distance: 6cm Reading Time: 0.1s Reading Distance: 2.5cm-10cm Battery: 2*AAA(Not Included) Operating Temperature: 0-50°C Package Weight: Approx. 52g/1.8oz Package List: 1*RFID Card Duplicator Note: 1. Please allow 1-3cm 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. 3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.