Bicycle Stretch Lock / bicycle lock

As growing up the market of high-priced bike, the price of parts of bike also became expensive. But there is still a blind spot that is the length of lock is a bit short. Using this vulnerable point, theft increases these days. A thief steal the part of bike after separating it except the strongly tightened part. This product is designed to solve this problem. It has planned with the idea of tape measure that can able to regulate the length of the lock. The length of it is about 4meters composed of alloy. In case of cutting off the cable by force, the speaker sounds an alarm through the sensor and lets user know connected with the application