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_x000D_in the case of obstacles such as walls, chairs, doors, etc._x000D_Upgradable via USB RechargeableBuilt-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_x000D_for those who don't have time with their cats and dogs._x000D_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_x000D_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_x000D_Caution and Contact- Please use this cat toy ball on hard floor such as wooden floor, tile floor and thin carpet. However, it may not ride well on thick carpets._x000D__x000D_Key features:_x000D_360 degree random automatic rotation ball toy, automatically changing direction when colliding with obstacles, having fun and exercising._x000D_Attracts animals' attention and stimulates their hunting instincts with unpredictable movements, fully mobilizing their enthusiasm and stimulating them._x000D_Upgraded version with USB charging, charge 1.5 hours, enjoy up to 4 hours of pleasure._x000D_Timer function, auto shut off every 30 minutes, prevent your cat from getting too addicted to the toy ball._x000D_Brighter LED light, the ball shot red light while moving, quickly attract your cat's attention and enjoy the fun._x000D_Made of high impact and non-toxic ABS plastic, won't even break the wall, durable and safe for your pets._x000D_Small, ideal for cats and puppies, intelligent hands-free interactive play._x000D__x000D__x000D_Specification:_x000D_Diameter: 2.5 inch / 6 cm_x000D__x000D_Weight: 3.5 ounces/100g_x000D__x000D_Charging time: 1.5 - 2 hours_x000D__x000D_Duration: 3.5 - 4 hours_x000D__x000D_Material: impact-resistant ABS