Features 1、Mini-type handheld mold, ergonomic characteristics, easy to carry 2、Only Read and Write two buttons, easy to operate 3、You can copy all ID(EM4100) cards with this RFID copier 4、Adopting advanced chip, product integration is higher, more stable and reliable 5、Excellent program algorithm and circuit design reduce the power consumption and prolong battery life (Battery is not included in the Package) Specification Description: This device is used to copy and duplicate the 125 Khz EM4100 ID Card for backup purpose. Excellent program algorithm and circuit design are adopted. You can copy all ID(EM4100) Cards with this RFID copier. Portable size, easy to carry. Features: 1. Mini-type handheld mold, ergonomic characteristics, easy to carry. 2. Only "Read" and "Write" two buttons, easy to operate. 3. You can copy all ID(EM4100) cards with this RFID copier. 4. Adopting advanced chip, product integration is higher, more stable and reliable. 5. Excellent program algorithm and circuit design reduce the power consumption and prolong battery life (Battery is not included in the Package). 6. Widely used at community, school, office and other access control needed places. Specifications: Frequency: 125 KHz Support: Copy ID(EM4100) Card, write T5577 Battery Type: 2 * AAA Battery (Battery not included) Copy Times: 20,000 Times Distance: ≤2.5cm (Keyfob) / 1.0in , ≤6cm (Card) / 3.4in Size: Approx. 11.7 * 7 * 3cm / 4.6 * 2.8 * 1.2in Weight: 86g Package List: 1 x RFID Copier without Battery 1 x Manual