Features: 1.Application: Disc brake lock is suitable for motorcycles, bicycles, scooters and any vehicle where there are holes or spokes on a wheel. 2.Anti Theft: Alarm disc lock is designed to protect your motorcycle or bike when parked outdoors or at home, protecting your property. 3.Alarm Alerts: When any vibration or shock is sensed while the alarm disc is located, an alarm of up to 110db will be automatically activated. 4.Waterproof: Motorcycle brake disc lock is made of stainless steel, rust proof, waterproof, high temperature resistant, sealed and dustproof, suitable for outdoor climatic conditions. 5.Stable Operation: Works by locking the disc brakes to help stop the vehicle from moving, giving you a reliable use experience. Specification: Item Type: Motorcycle Disc Brake Lock Material: Stainless steel Alarm Volume: 110 db Battery Type: Button cell Battery Model: AG13 Single Battery Capacity: 160mAh Application: Suitable for motorcycles, bicycles, scooters and any vehicle where there are holes or spokes on a wheel Note: The product comes with a built in battery (already installed on the product), and 6 more batteries will be shipped.