【Safe & Chew-Resistant Material】The replaceable outer shell is made of durable bite resistance Food-Grade Rubber Material, this interactive dog ball is lightweight, pet-safe, eco-friendly and non-toxic, which rigorously tested to withstand aggressive chewing and intense play, ensuring long-lasting fun for medium and large dogs.【Smart Interactive Dog Toy for Fun】Tossing, Chasing and Playing. Combining gentle and wild bouncing, jumping, rolling, it is suitable for different energy levels and personalities of dogs. Engages your pet's natural chase instincts with automatic rotating and bouncing movements. This enrichment toy provides endless entertainment and encourages healthy exercise. Dog toys to keep them busy and happy, reduce boredom and anxiety.【Large Battery Capacity&Type-C Charging】Bulit-in 850mAh battery, 2X larger than others. Type-C fast charging, just 1 hour of charge and enjoy up to 3~4 hours of nonstop play. Note: Do not heavily impact the toy, as it may damage the motor.【LED Light for Play and Focus】The dog stimulation ball toy features colorful LED lights, more attractive and easier to find in the dark. Default mode 1 for flashing lights (green indicator), switch to mode 2 for energy saving No Light (blue indicator). Perfect for Indoor and outdoor use, dynamic play sessions anywhere—from the living room to the backyard. (Suitable for Hard Surfaces)【Lightweight & IPX7 Waterproof】IPX7 water resistance makes it easy to rinse and wipe, very easy to clean. Note: Please make sure that the shell is tightened to prevent water from entering the motor