Describe: 1. The gravitational ball that cats like, intelligent wake-up and fun companionship, intelligent rolling ball [personal playmate] 2. A small gravity ball, it can the cat and keep him company. It can stimulate the curiosity of the cat owner by teasing it. 3. Simulate biological trajectories, intelligently avoid obstacles, simulate prey escape trajectories, and intelligently choose routes to avoid after rolling and hitting obstacles. 4. 5 minutes of sleep, smart wake-up by tapping, automatic sleep after 3 minutes of operation, activated by external vibration 5. Food-grade silicone material, the cat is not afraid of bites. It is a healthy material and can be chewed safely. The thickened material is not easy to break. 6. Give the cat a night of curiosity and give you a peaceful sleep. Rolling is quiet, day and night, you can play whenever you want Specification: Product fabric: ABS, silicone Product net weight: 40.5G Product size: 4.1*4.1cm Package contains: 1pcs * Automatic cat funny ball