QQ-Tech Creative Universal Alarm Padlock for Bicycle Motorcycle Door Gate Bike Shed Bolt Chain Lock 110db Siren Heavy Duty Security Alarm Lock (17mm Shackle, Black) 110 dB Alarm; 17mm Shackle Diameter; Anti-cut; Corrosion Resistant; Waterproof; Hot Processed and Hardened Shackle (With Rubber Coating); Suitable for all weather conditions; 105-110 db alarm that sounds when tampered; Shake shock move or vibrate sensor; built in tamper-proof ALARM SYSTEM; Two settings - active alarm and inactive alarm Package includes: 1 x Alarm padlock; 3 x brass security keys; 6 x button batteries;1 year warranty guarantee!