Dynamic reflect: updated randomly every 60s (customized to update every 20s or every 30s);

Feel: The sunburn design of the shell feels very good;

Performance: Products waterproof,cold-proof,shock-proof and high-temperature resistance;

Destroyed: Disassembly will result in hardware damage and data loss in the chip;

Token code: Each token has a nine-digit bar code behind it, and each bar code is unique;