The Holiday Watering Kit Is A Weather/climate Controlled System So It Is Versatile Enouth To Be Used In Outdoor Hanging Baskets In The Summer And/or Indoor Pot Plants In The Winter. A Value For Money Product That Can Be Used In All Seasons, Year After Year.the Drip Rate Adjusts Automatically And Will Adapt To The Often-changeable British Weather And Will Even Switch Itself Off During The Night, Giving Better Control Than Many Of The Expensive Timed Watering Systems.the F4 Flask Holds 650ml Approx: Enough Water To Keep A Hanging Basket Or A Large Pot Watered For Well Over A Week In Half Sun, Half Shade Conditions And Its Dripper Can Be Easily Adjusted To The Location And Size Of Your Plant, With Two Settings For Indoor And Outdoor Use.simply Fit The Flask Into The Spike And Place Vertically Into The Compost Of Hanging Baskets, Tubs, Pots, Growing Bags Or Any Other Container, Then The Weather /climate Or Room Conditions Take Overnot Only Is The Watering Spike The First Automatic Weather Controlled Waterer, But Because It Delivers The Water Straight Down To The Roots None Of The Water Will Be Wasted By Surface Evaporation Or Washing Through The Soil. There Is No Dripping, Spillage Or Waste!watering Kit Contents:3 X Short Watering Spikes3 X Long Watering Spikes3 X 500 Ml F3 Flasks3 X 650 Ml F4 Flask