Flight Force Battling Drones. Set of two drones let you have a midair battle with a friend Six-axis gyroscope makes drones easy to fly...keeps them stable Use indoor & outdoors--flies in many conditions, including light wind Remotes use 2.4GHz frequency to fly drone Charge drones via USB; remote controls use eight AAA batteries Flight Speeds: Two - use the one that matches your flying ability Flying Range: Up to 100 feet (30 meters) Interface: Fly via remote control (two included) Flight Time: Up to five minutes on a charge In the Box: eight spare rotors; remote controls; batteries; USB cable Dimensions: 6.2" x 6.2" by 2.6" Weight: 4.8 oz These Flight ForceTM Battling Drones let you enact a mid-air battle with a friend, or just fly one on your own! Flight ForceTM Battling Drones feature a six-axis gyroscope to maintain balance and stability. Easy-to-fly, these drones can be used indoors or out. Included remote control has two flight speeds to match drone pilot's ability. Flies for up to five minutes on a charge; power up via USB (cord included); remote controls use eight AAA batteries (also included). Flying range of up to 100 feet so you can bring the battle to your back yard...drones are able to even fly in light winds. Package includes eight spare rotors, instructions and two drones. Take to the skies with Flight ForceTM Battling Drones from Brookstone today! Notice to Register Drones: The Federal Aviation Administration (FAA) requires all owners of drones (Unmanned Aircraft Systems) that weigh more than 0.55 pounds to register their devices at https://registermyuas.faa.gov . Check your local civil aerial regulation as additional state and/or local requirements may apply.