How close do I have to be to the Delight for them to be linked?

To e.g. turn on the bike lights or use the FLASH&FIND feature you only have to be with 100m of the DeLight proximity.

Bluetooth distance is affected by many factors such as building and if you have parked your bike in a basement – therefore the distances is a guideline.

When you update the bike light and make your settings we recommend that you have both the phone and bike light with in one meters range of each other.