1. Fully automatic EM card induction card reading technology, no button required 2. Metal shell, inner tank soft silicone wrapping, super waterproof and dustproof design, protection level of IP67 3. Built-in lithium battery, direct charging with communication cable, two-in-one communication charging 4. Supports Simplified, Traditional, English and more 5. 32,000 anti-fall records to accurately inquire about intentional smashing machines 6. 80,000 patrol data is stored in large capacity, and there is no need to download the data in the empty device frequently. 7. Contact USB cable communication, truly high-speed drive-free, data transmission speed up to 320 pieces/s 8. Security: Data can be saved for 30 years after power loss 9. Machine size/weight: 130*40*25mm/170g