This product is a handheld 125KHz RFID card copier that can easily write the 125KHz ID card number. This allows you to have a duplicate set of ID cards for multiple purposes, such as access control identification, attendance tracking, etc. Features: * Standalone operation, no need to connect to a computer/PC. * Built-in transmitter and receiver antenna, high sensitivity, and fast read/write speed. * Handheld design, 2 buttons for easy operation, convenient to use. * Built-in individual LED lights and buzzer indicator to signal your operation status. * Supports writing chips: T5577/EM4305/5200/8265/8268/8800. * Supports reading chips: TK4100/EM4100/EM4200/TK4100-D.. Specifications: * Battery supply: 3V (2 * AAA battery) (Batteries not included) * Temperature: -20-50 ℃ * Lifespan: 15,000 times * Read distance: 0 - 6 cm * Size: 11.5 cm * 7 cm * 3 cm / 4.5 * 2.8 * 1.2 inches * Package weight: 106 g / 3.7 oz Package list: * 1 * RFID Handheld Copier (Batteries not included) * 5 * Rewritable RFID Key Tags * 1 * User Manual Note! Please note that this type of chip card is blank when it leaves the factory and must be written to before it can be read.