Smart cat toy automatic rolling ball electric cat toy interactive cat toy self-training cat toy pet accessory Features: 1. The coating is made of silicone material, which is soft and comfortable to the touch and will not cause harm to animals. USB charging design, no need to replace batteries, environmental protection and economical 2. two operating modes, when started, the green light will light up for 3 seconds in normal mode and will automatically turn off after 5 minutes of operation. After 5 minutes of operation, it switches to standby mode and can be woken up by touching it. Easy to use. 3) When the ball touches the obstacle, it will automatically rotate. So you don’t have to worry about the toy staying in the corner. Material: ABS or silicone Size: 4.3cm diameter Battery capacity: 80mAh or button cell Package Contents: Gravity ballx1, 1 USB do charging cable Reminder: It is recommended that the battery be fully charged do the first use. Charging Information: 1. red flashing light: the battery is too weak and needs to be charged. 2. flashing blue light: the product is in the process of charging 3. The green light always lights up: charging is complete and should be fully charged do the first use.