Product information: Ability Training: vision, hands-on brain, hand-eye coordination, other ability training, interactive toys, parent-child communication, interest training Color: Black dual camera (four-side obstacle avoidance optical flow positioning electrical adjustment camera), Gray dual camera (four-side obstacle avoidance optical flow positioning electrical adjustment camera), Orange dual camera (four-side obstacle avoidance optical flow positioning electrical adjustment camera) Toy material: Plastic Applicable people: unlimited Specifications: Single-electric version, dual-electric version, three-electric version, four-electric version Features: Four-side obstacle avoidance optical flow positioning electrical adjustment lens Size: less than 30cm