The O2 Cool Deluxe Necklace Fan provides hands-free cooling with vertical airflow and a lightweight design with breakaway lanyard. Keep cool in the hot summer days everywhere you go. Necklace fan provides a comfortable yet powerful breeze. This great personal necklace fan is perfect for cooling on-the-go. The fan comes in a variety of colors to coordinate with your favorite work-out clothes or outfits. Measures 1″ diameter x 5″ high Requires 2 AA batteries (not included) Hangs around your neck for hands-free cooling Provides a powerful yet comfortable breeze Great for outdoors Hands-free cooling – Vertical Airflow Color Coordinated Breakaway safety lanyard Powerful one speed motor with internal 2.5 inch fan blade. 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.