Some have a shutoff switch. Spray patterns vary from mist, sharp, wide, to massage or pulsating. The spray pattern is changed by rotating either the shower head or a ring around the head, or by twisting a lever or changing a dial. Check to see which is most convenient for you and others to use. Selecting the shower head device may depend on your existing shower installation.
Most shower heads mount directly onto the shower pipe.
Some are available on a flexible hose and can be mounted on a bracket attached to the pipe, allowing the shower head to be hand-held. Water pressure may affect low-flow shower heads. The payback depends on the size of your household and the number and length of showers. Areas where water use is restricted and not readily available, making it costly, may save even more. Utility charges for heating water affect the savings on energy bills.