The Ryobi 18V cordless fan is ideal for indoor or outdoor use and has 8 adjustable positions to ensure maximum coverage. This unit can provide 2,100rpm for maximum air flow or 1,400rpm for increased runtime and quiet operation. This unit boasts up to 18 hours runtime with its battery (sold separately) and is completed with a compact, lightweight and portable carry handle for easy movement. With the Ryobi One Plus system one battery and charger can be used with a comprehensive range of power and garden tools which allows you to build a wide range of tools which are compatible with one battery. This stops unnecessary batteries and chargers being brought every time you purchase a one plus tool and saves you money - One battery powers them all!