Reliable Anti-Theft Protection The Grundig motorcycle disc brake lock provides strong security against theft for motorcycles, scooters, mopeds, and bicycles. Its durable aluminum alloy construction is resistant to sawing, cutting, corrosion, and harsh weather conditions. Built-In 110dB Alarm Equipped with a vibration and motion sensor, the lock emits a loud 110dB alarm when tampering or shocks are detected. This high-volume warning effectively deters thieves and alerts the owner instantly. Waterproof and Durable Design With its waterproof construction, this lock works reliably even in rainy weather. Perfect for everyday use, commuting, or long-term outdoor parking. Easy to Use Simply press the lock core to secure it — the alarm will activate after 15 seconds. Any further vibrations will trigger repeated alarms lasting 10 seconds each. Use the included key to unlock and immediately stop the alarm. Fitment Compatible with all drilled brake rotors less than 7 mm (1 or 4 inch) thick, making it suitable for a wide range of motorcycles and bikes. Specifications Material: Aluminum Alloy Alarm Volume: 110dB Power: 6 × AG13 Button Batteries Size: 8.5 × 5.6 × 3.1 cm (3.2 × 2.4 in) Fitment: Brake rotors < 7 mm thick Package Contents 1 × Grundig Disc Brake Lock 2 × Keys 6 × AG13 Button Batteries (pre-installed) 1 × User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.