Mini dx3 is the smallest Portable Reader in the World, can read any 300-4000 oe(Lo-co and Hi-co) Mag.card. Ideal choice for any movable (Trade shows, Racing events), Point of sales ,Attendance (Student ID, Membership card), Law enforcement (DMV card) and so on.. Features: 2M bytes 8000 3-track version all three tracks, 300-4000 OE Auto Power Off is set by user Battery powered and low battery indicated Data download able to the computer to MSR605X MSRX6 MSRX6BT via USB Read ISO format and special format are available upon request No programming required, easy to use as 1- 2- 3 Dimensions: L 1.6 x W 0.8 x H 1.2 inch ( L 4.7 x W 2.2 x H 3.1 cm ) Net Weight: 25g Battery Power: 3.7v 250 MAH Rechargeable Battery Working Temp: 0~55 Deg. C Humidity: 10~90% Relative Storage Temp: -10~55 Deg C Communication: USB Package List: 1x MINI DX3 Reader 1x Software CD 1x USB cable 1x Rope