The jersey is a complete unit by itself. It need not be connected to your phone, cycle (or any other device) to work perfectly.
Gesture controlled indicators. Point your hand in the direction you want to turn, and the indicators will automatically start working!
The jersey has an LED at the neck that glows. The light can be switched on or off, depending on the situation.
The jerseys have a soft switch embedded on one of the sleeves that is used to switch the electronics on or off. It is non-intrusive and won’t cause any discomfort.