O2Cool Deluxe Necklace Fan isperfect for cooling on-the-go. We offer a variety of products that provides a cool breeze and misting all in the palm of your hand as well as a necklace and clip fan for hands free cooling. The fans can be carried in your purse or pocket. Powerful one speed motor with internal 2.5 inch fan blade Color coordinated break-away lanyard Compact design makes it great for travel; easy to carry and store Perfect for outdoor activities or indoors at a theater, school or sporting event Uses 2 AA-Cell batteries (not included) Blade size: 2.5-inches Number of speeds: 1 Assorted colors only