1. A oval-designed safe box attach into the empty space of spare tyre.
2. A screw in the bottom of the safe box is perfectly connected to the spare tyre.
3. The design not only fix the safe box, but protect the spare tyre against theft as well.
4. Body: 4mm Board: 6mm (Superior Steel)
5. Two levels of code: Guest code(1-8 digit); Master code(1-8 digit)
6. Easy operation with a mechanical key to open after inputing passwords
7. Power supply: 4 pieces of 1.5V battery
8. Low battery precaution
9. Password maintain even running out of battery