The Water Saver for toilet is developed to reduce the water flow when flushing your toilet, but  you are still in control if you want a quick flush or a long  flush.  
When you push the flush handle on your toilet tank, the flow tube inside will go up which allows the water stored in the tank to flow through your toilet (fig. 1 see pictures).
The Water Saver for toilet is a  weight you can hang on the flow tube inside the toilet tank. If the weight is added, the flow tube will go down again caused by the  weight of the Water Saver and this will stop the flow of the water. When you want a big flush, you can easily just remain pressing the flushing handle. The flushing only stops as soon as you release the flushing handle (fig. 2 see pictures)

Pack Contents:
1 x Water Saver Toilet
1 x Instructions
Weight: 154g
Length including clip: 11cm
Diameter: 2cm