Feature: 1. Using EM inductive card reading technology, no need of touch reading. 2. Rubber cover, stainless steel body, frosted design, provides comfortable feel, and it is dustproof, waterproof and non-slip. 3. Easy to operate, just press the switch button to read while closing to the spot. 4. With indicator light, red light will be given when reading successfully, and the fuselage will vibrate. 5. USB interface, directly connected to the computer to read data, no communication socket required. 6. The back cover has a waterproof sealing ring, with back cover opening tool, practical to use. 7. Good compatibility, it can read all 125K frequency on the market. 8. The fixed structure of the whole machine adopts special explosion-proof design, super sturdy and impact resistant. 9. Arranged in the patrol line, no need of power supply and wiring, convenient for using. 10. Built-in rechargeable battery, easy to charge, bring much convenience for you. Specification: Condition: 100% Brand New Item Type: Patrol System Color: As picture shown Read Button: Non-contact RFID 125KHZ Induction Distance: Approx. 3-6cm/1.2-2.4in Body Material: Stainless Steel Cover Material: Frosted Rubber Protection Grade: IP67, Waterproof and Dustproof Communications: USB cable, no communication socket required Storage Capacity: 7200pcs Working Environment: -40℃ - 70℃ Power Supply: Built-in 3.6V 700mAh Lipo Batteries, Low Power Consumption, Support Direct Charge. Package List: 1 x Induction Patrol Machine1 x CD1 x Instruction1 x Plug1 x USB Cable1 x RFID Data Transmission Cable1 x Protection Cover1 x U-Shape Wrench