Product information:Ability Training: emotion, vision, intelligence development, hands-on brain, grasping, sensory, hand-eye coordination, other ability training, interactive toys, parent-child communication, interest training Color: Black & Yellow-Single Camera [intelligent obstacle avoidance], black cyan-Single Camera [intelligent obstacle avoidance], Black & Yellow-dual camera [intelligent obstacle avoidance], black cyan-dual camera [intelligent obstacle avoidance]], black and yellow-brushless-electric adjustment dual camera [optical flow obstacle avoidance], black and cyan-brushless-electric adjustment dual cameras [optical flow obstacle avoidance]] Applicable age: Youth (15-35 years old) Toy material: Plastic Applicable people: no limit, girls, boys Specifications: single battery, double battery, three battery Features: brushless power supply/optical flow positioning/four-side obstacle avoidance/electric adjustment dual camera Size: less than 30cmPacking list: Spare blades*4+Protective frame * 4+Screwdriver * 1+Charging cable *1 +Storage bag * 1+battery * 1/2/3Product Image: