Features: USB Rechargeable: Long-lasting battery life for reliable protection with up to 3 months usage on a single charge.Ideal for outdoor enthusiasts and urban commuters looking to secure their bike. Mounting bracket: In addition to the zipper and double-sided adhesive mounting mode, come with mounting bracket, adjustable ring size, easy to change the installation position. It is more stable,no drop probability. 110 dB Alarm System: 110 dB alarm system to deter theft and alert you of any unauthorized movements. 3D Motion sensor triggers alarm if movement is detected.3 level volume adjustable/7 level adjustable sensitivity. Bicycle Located Function: Super strong 229 Ft wireless range help you find your bike.Comes with a remote control for easy arm/disarm.3 kinds of ringtones for your choice.IP54 Water-resistant design for outdoor use. Multifunctional Anti-theft Alarm: This vibration trigger alarm is applicable to motorcycles, electric bicycles, motorcycles, scooters, trailers and luggage.Supporting more remote or alarm pairing. Square Bike Alarm Color: Black Size: L & W-45mm/1.81in, H-32mm/1.37in Mounting: Double-sided Stick, Cable Tie, Bracket Suitable: Bicycle, Motorcycle, Scooter, E-bike