Made of high-quality metal that is anti-corrosion, wear resistance, solid and durable for long time use. Vibrating sensor system, when the bicycle shaken or vibrated, the alarm will release ultra-strong alert sounds for about 20 seconds, good bicycle security anti-theft tool. 9V battery (not included) can last a week for normal usage. Press the red 'Lock' button to enter armed state, one beep indicates that the alarm is active. Press the gray 'Unlock' button to quit the armed state, double beep sounds indicating. Easy to operate, remote control distance can reach up to 30 feet. Specially designed for bike, install it to keep your bike safety.
