Claber 8054 Oasis Evolution is a completely autonomous and space-saving water distributor that is ready to use in just a few minutes. It does not need to be connected to a faucet or an electrical outlet. The Oasis Evolution holds 25 liters of water and can irrigate up to 20 potted plants. Four different programs (7, 14, 21, or 28 days of autonomy) and the start time can be set via a backlit LCD display. The set includes all the necessary components to create a drip irrigation system: 10 meters of drip hose, 20 drippers, and 20 hose holders. Only two 1.5 V AA batteries are additionally required.