Features: Overall waterproof: Lock cover and lock body to form a closed space, the battery and circuit board in the closed space state can not touch the water, to provide maximum protection. Stainless steel lock cylinder: Stainless steel blade lock cylinder with complex internal structure to improve the hardness and strength, thus resisting damage by external forces. Security: Up to 110db burglar alarm, lock core power support, once the body touches the vibration, will emit an ear-piercing sharp alarm sound, enough to deter and scare off thieves. Convenient press locking: Locking does not require a key, eliminating the trouble of finding a key, press against the disc brake disc to lock, a convenient helper for your outdoor riding. Alarm device can be turned on or off: You can set the alarm device freely according to your needs. Versatility: Suitable for motorcycles, bicycles, scooters and any vehicles with holes or spokes on the wheels. Instructions for use: 1. Open the package, take off the small round pad in the groove, take off the small hexagonal wrench and save it for when you replace the battery. 2. This intelligent alarm lock has two functions: alarm or no alarm, which can prevent thieves and avoid disturbance, and is widely used for motorcycles, electric cars, bicycles, mountain bikes, etc. 3. Alarm state: press the lock core, enter the second gear (lock core and lock cover level), hear the "beep" sound, the lock into the alarm state, 5 seconds later, when the lock or car by a certain vibration that "beep, beep, beep" 3 beeps, again Vibration, the alarm sound immediately, continuous vibration, continuous alarm, each alarm sound lasts 10 seconds. 4. No alarm state: press the lock cylinder, enter the first gear (lock cylinder about 5mm higher than the lock cover), do not hear the "beep" sound, the lock into the state of non-alarm, the same as ordinary mechanical locks. 5. When you hear the "beep, beep, beep" continuous sound, indicating that the battery has been exhausted, remind the owner needs to replace the battery. To replace the battery, please use the small wrench equipped with four screws to turn out, take off the top cover can be replaced, please pay attention to the battery "positive and negative" pole. Specifications: Model: L4141GT Color: silver\black\bronze(optional) Material: stainless steel+zinc alloy Battery type: LR44(AG13) Package size: 17 * 11.7 * 7cm Package weight: 989g Package List: 1 * Lock 3 * Keys 6 * Spare Battery 1 * Screwdriver 1 * Carrying Bag 1 * Reminder Cable 1 * Instruction Manual