Auto Rolling LED Chaser- Just press the button. Our cat game ball will automatically move randomly and light up in red to attract your cats attention. It can also change automatically from direction to case of obstacles such as wall, chair, door, etc. Upgrade USB RechargeableBuilt-in 250mAh Li-ion battery, Can last 4 hours after 1.5 hours charging. It can automatically turn off after 30 minutes to prevent your kitten from losing interest in the toy ball and is perfect for those who dont have time with their cats and dogs. Durable and Safe- Made of impact-resistant, wear-resistant and non-toxic ABS plastic. Dont break against the wall. Durable and safe for your pets. CE, RoHS and FCC certified More Movement for Health- Chasing around the LED Cat Chaser helps domestic cats and dogs to exercise more, improve immunity, reduce obesity and kill boredom when the owner is away Caution and Contact - Please use this cat toy ball on hard floors, such as wooden floors, tile floors and thin carpets. But it might not ride well on thick carpet. Contact us: if you have any problem, please contact us by email or Amazon for help instead of making a review