TechniSat DIGITRADIO Bike 1 Manuel D'instructions page 23

4.4.2 Frame assembly
If you have already fitted a bottle cage to your bike, you can place the DIGITRADIO
Bike 1 in it. Check that the DIGITRADIO Bike 1 is securely fastened before every
journey.
The DIGITRADIO Bike 1 is designed to be compatible with most bottle cages.
However, depending on the type/design of the bottle cage, the DIGITRADIO
Bike 1 may sit too loosely.
In this case, use the radio holder supplied.
Quick release
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