This ingenious system can be set to water your plants automatically. The unit can be set to water every day, every third day, every fifth day or once a week at the same time depending on the type of plant. Operation is simple and a set of batteries should last at least 30 days. The unit will fit onto most standard lemonade or cola bottles. The set contains hose and fittings for two plants but with additional fittings can easily look after four plants. Liquid feed may be added to the water for worry free plant feeding. The user may go away for up to 30 days knowing that the plants will be regularly watered