Stäubli couplings... not the cheapest but by far the best.
These couplings are very wear-resistant and are therefore often liked by window cleaners. Compared to other couplings, they last a lot longer.
This coupling has an on/off switch, so to speak.
1 push on the button stops the water flowing, a 2nd push on the button releases the coupling.
These are always supplied with the corresponding ear clamps.