This Irrometer 900M-BP-5W Pack comes with a 5 Watt Battery, which is powered by a Solar Panel. The brand, Irrometer, has been known for its quality products and this solar panel battery is no exception. It is perfect for those who want to use renewable energy sources to power their homes or gardens. The model number, 900M-BP-5W, indicates the specifications of the product. It is suitable for those who are interested in alternative energy supplies and want to reduce their carbon footprint. This product is categorized under Home Garden, Home Improvement, Electrical Supplies, Alternative Energy Supplies, Solar Power Supplies, and Solar Panels Kits. Brand new and complete. Opened box just to take pictures. Please see pictures. Never used/installed. Everything is still in original packaging. What you see in the pictures, is what you will be receiving. No surprises, buy with confidence. Many thanks.