Description Features 1. Two Modes Available: Irregular Running Mode: Press and hold the button for 3 seconds, it will automatically move and rotate; Crazy Bouncing Mode: Press and hold the button for 3 seconds,then quickly press the button again, it will bounce automatically. Built-in multi-colors flash lights inside the ball, it can attract more attention and brings more joy to your dogs. 2. Suitable for Multiple Sites: Irregular running mode don't work with the tennis cover, for hard floors only,and not for chewers. The tennis cover could only work under crazy bouncing mode, special for slight chewers, better work on thin carpet or a lawn outdoor for lower noise. 3. Motion Activated Toy: Built-in motion sensor,when your dog touchs or bites it, it will automatically move, rotate or bounce for 10 seconds, then the colorful LED light will continue to flash for 4 seconds and go to standby. 4. USB Rechargeable: Built with 500mAh battery, charging 1.5 hours, working 4 hours continuously. Waterproof: IP54. Meet the requirements for indoor and outdoor use 5. Durable & Safe Materials: Interactive dog ball toy is made durable natural Rubber and TPU which are safe and non-toxic. But the toy does not work for aggressive chewers. Specification Material: Silicone, ABS Color: Yellow, Pink, Orange Size: 8 cm Weight: 165 g, 185 g Battery: 500mAh Waterproof grade: IP54