O2COOL's FD10101A Treva 10" battery operated camping fan with AC adapter gray is a must-have camping accessory. This powerful 2-speed fan has a compact design for easy transport and storage. It even has a built-in carry handle for easy portability. The adjustable tilt, for directional airflow, makes it perfect wherever you place it. This fan requires 6-D batteries which are not included and includes an AC adapter for easy adaptability. The battery run time is approximately 53 hours on low and approximately 20 hours on high. For best performance, always use fresh alkaline batteries. Do not mix old and new batteries. Do not mix alkaline, carbon-zinc or rechargeable battery types. There is a risk of leakage from the batteries if they are installed incorrectly. Please follow all of the instructions. When storing the fan for more than 2 weeks, please remove the batteries and ensure the fan is in the off position. Clean only with a dry cloth. Do not allow water to drip into the fan.