1. Easy to install and operate.
2. Good material,more durable.
3. Press the red A button to arm the defense, it will beep once; press the gray B button to cancel the anti-theft, it will beep twice
4. Super loud, simple operation, easy anti-theft
5. Leave the bike for a short time and no longer have to bother to lock it
6. Anti-theft, no worries, protect your car
