Octopus Toy Material: Plastic Applicable Age: Children (4-6 Years Old) Battery: Built-in 3.7V 500mAh Rechargeable Battery(Included) Features: with LED Music, Smart Obstacle Avoidance, Educational Size Details: L: 20.7cm/8.15", W: 12.6cm/4.96", H: 7.6cm/2.99" (Approx.)   Interactive Dancing & Crawling Action: Twists, rotates, and crawls with vibrant LED lights and playful music, encouraging toddlers to engage in active play and develop motor skills. Smart Obstacle Avoidance Sensors: Equipped with intelligent sensors that detect and navigate around obstacles, ensuring smooth, uninterrupted play and promoting curiosity. Vibrant LED Lights & Melodies: Features colorful flashing lights and cheerful music that stimulate sensory development, making it perfect for belly time and early learning. USB Rechargeable & Eco-Friendly: Includes a built-in 500mAh rechargeable battery with USB charging, reducing waste and offering convenient, long-lasting play. Versatile for Multiple Settings: Ideal for home, kindergarten, bedrooms, or as a gift—suitable for both boys and girls to enjoy indoor or outdoor educational fun.