Luxqueen Motorcycle Motorbike Scooter Anti-theft Security Alarm Easy to use, powered by 9V battery(not include battery), low power consumption. Color: black. Shell material: durable hard plastic With strong magnet, it can be stuck or attached to the motorcycle or other metal objects. The alarm will sound if it is shocked, moved or vibrated by somebody tampering with it or your motorcycle. Great for bike scooters, motorcycles or cars, and also ideal for windows, doors, filing cabinets, safety boxes, indoor and outdoor use, etc.