Bicycle Murmur/Bike Bell / Bicycle Murmur/Bike Bell

A Spontaneous Reminder
When riding bicycle in the city, pedestrians are the primary things we encounter. High-alarmed bell might be disturbing, so what we need now maybe is a bell which can fit in the urban features.We consider the bell should be a part of the bicycle, so we design it to make sound by the bicycle itself. Different bike, different tone.
In order to slow down the urban lives, we let the trigger hit by the bike spokes, so the bell can be changed by the riding speed.
The slower speed you ride, the clearer sound you can enjoy.