The Clam Large Fan/LED Light is a great ice fishing accessory! The fan has a high and low speed position. It helps circulate air, reducing that traditional separation of hot & cold feeling inside an ice house. I've found that the circulating air also helps keep ice holes from freezing over. Combining both the fan and light into one device makes it more convenient. The light is on it's own bracket and can be positioned to direct light in different angles. Includes a "S-hook" so that it can be easily hung from the top of a fish house as well as other mounting options. It functions off 2 D batteries and has a built-in 12 volt jack/adapter with a DC connector/cord includes. Can easily be wired to run off a 12 volt battery. This is a must have accessory for portable ice houses!