Auto Rolling LED Chaser- Just press the button. Our cat play ball automatically moves randomly and lights up red to attract your cat's attention. It can also automatically change direction when encountering obstacles such as wall, chair, door, etc. Upgrade USB rechargeable - Built-in 250mAh Li-ion battery - Can last 4 hours after 1.5 hours charging. It can automatically shut off after 30 minutes to prevent your kitten 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 break against the wall. Durable and safe for your pets. CE, RoHS and FCC Certified More Movement for Health- Chasing Around LED Cat Chaser helps domestic cats and dogs to exercise more, improve immunity, reduce obesity and kill boredom when the owner is away