Features: Intelligent to avoid obstacles, built-in centrifugal rolling device, encounter obstacles can be freely converted out of the for path, into a dead corner can easily turn out; Built-in LED flash, with the rotation of the sphere to attract the attention of the pet, stimulate the pet's initiative and keep a good figure; Say goodbye to boredom and loneliness USB CHARGEABLE VERSION No need to replace batteries over and over again, just simply plug in the cable for 1.5 hours, provides your kitty up to 4 hours of fun time 360 DEGREE SELF ROTATIONThe primary purpose of the self rotating ball is to have your pet for chase the ball around and have fun. With just a single press of a button, the ball will start to do a 360 degrees self rotation and attract your pet's attention. The ball will continuously move around your house while producing a red light simultaneously AUTOMATIC DIRECTION CHANGE Due to the sphere shape and self balancing system, the ball will automatically change its direction when colliding with a wall, for ch, door, etc. no for extra help required, all you need to do is turn the ball on to for play and turn off when your pet is out of energy and done playing CAUTION The ball rolls best on hard floor,might not roll well on thick carpet, please purchase with attention AUTOMATICAL SHUT OFFThe ball will automatically turns off after 40 minutes of rolling,perfect for those who don'for t have for time to watch your kitty while they are playing ABS environmental for protection plastic, wear-resistant, anti-scratch, anti-bite, environmental for protection and safety. motor is more powerful, charging for 2 hours, can work for 3-4 hours, 15 minutes of power failure for protection function, keep the for cat for fresh, built-in LED flash, attract the attention of the for cat. Note: built-in lithium battery Colors: green, pink, white Suitable for: for cat/small to medium size dog Material: ABS environment-friendly plastic Diameter:7 for cm(2.76in) Note:1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes(without retail package): 1* cats toy