2.Anti-theft Alarm with 4 Sound Modes:Press and hold the button for 2.5 seconds to change the speaker mode. With 4 ringing modes, USB charging for 20 minutes, with alarm mode, which can remind you that your bicycle is moved or stolen.
This product would be ideal for cyclists who frequently ride on roads and trails, requiring a loud and adjustable bell to ensure vehicle drivers and pedestrians see and hear them.
