【Auto Rolling & LED Chaser】- Just press the button. Our cat toy ball will automatically move randomly and light up red to attract your cat’s attention. It can also automatically move from direction to direction switch in the case of obstacles such as walls, chairs, doors, etc. 【Upgradable via USB Rechargeable】Built-in 250mAh Li-ion battery, lasts 4 hours after 1.5 hours charging. It can turn off automatically after 30 minutes to prevent your kitty from losing interest in the toy ball and is perfect for those who don’t have time with their cats and dogs. 【Durable and Safe】- Made of impact-resistant, wear-resistant and non-toxic ABS plastic. Don’t crash into the wall. Durable and safe for your pets. CE, RoHS and FCC certified 【More Exercise for Health】- Chasing around the LED Cat Chaser helps pet cats and dogs exercise more, boost immunity, reduce obesity and banish boredom when the owner is away< /p> 【Caution and Contact】- Please use this cat toy ball on hard floor such as wooden