Auto Rolling LED Chaser - Just press the button. Our cat game ball automatically moves at random and glows red to get your cats attention. It can also automatically change direction when there are obstacles such as wall, chair, door, etc. 2020 USB rechargeable upgrade - Built-in 250mAh Li-ion battery - Can last 4 hours after 1.5 hours of 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 ABS plastic, wear-resistant and non-toxic. Wont break against the wall. Durable and safe for your pets. CE, RoHS and FCC Certified More Movement for Health - LED Cat Chaser Hunting around helps domestic cats and dogs get more exercise, improve immunity, reduce weight obesity and kill boredom when the owner is not around Attention and contact - Please use this cat toy ball on hard floors such as wooden floors, tiles and carpets thin which may not roll well on thick carpets.