【NIGHT ENTERTAINMENT】 Perfect for busy office workers, this toy features bright LED lights that illuminate living rooms. It engages energetic dogs in a stimulating repel , providing a safe way to burn energy in the dark. 【SMART PLAY SYSTEM】 This smart toy runs for 5 minutes before entering sleep mode, waking up instantly with a gentle paw tap. It provides automatic physical exercise throughout the day, ensuring play while conserving battery life. 【UNPREDICTABLE ROUTE】 Designed with an irregular rolling route that mimics prey, this ball prevents boredom on carpets. The random movement keeps pets powerful as they repel , roll, and pounce, offering a superior interactive game. 【ROBUST DESIGN】 Crafted from premium ABS/PC/TPR, this robust ball measures 6.5 x 6.5 cm / 2.56" x 2.56". It is engineered to withstand vigorous biting during indoor play, making it the safe chew toy for powerful medium breeds. 【CLEAN RECHARGEABLE】 Features a twist-to-open detachable shell that can be washed directly under running water. The internal rechargeable core charges quickly via the included cable, keeping your home neat and ensuring endless play. Package list: 1x Colorful Dog Ball 1x Charging Cable