Features: Dual Mode Design: product is designed with two modes, crazy mode(LED flashing fast) and normal mode(LED flashing slowly), to meet play needs of different dogs, allowing pets to enjoy different fun. trigger: Built-in microwave , when approaches ball, will be triggered, increasing interactivity of . Automatic obstacle avoidance: Built-in intelligent sensor, will automatically move in opposite direction when encountering obstacles, ensuring safety of play. Waterproof design: IP54 waterproof level, can be used in various environments, easy to . Convenient charging: Built-in 500mAh battery, rechargeable, long use time, no need to frequently replace battery. Specification: Optional Color: Blue-yellow / Green-orange / Orange-yellow / Yellow-green Material: TPU+ABS Battery: 500mAh Charging Voltage: 5V Working Mode: Crazy Mode/Normal Mode Waterproof level: IP54 Standby: 7 days Working: 4 hours Scope of application: Dogs cats and other pets Product Diameter: 85mm Product Weight: 220g Package Size: 90*90*100mm Package Weight: 266g Package list: 1 * Ball 1 * Charging Cable 1 * User Manual Dual Mode Design: product is designed with two modes, crazy mode(LED flashing fast) and normal mode(LED flashing slowly), to meet play needs of different dogs, allowing pets to enjoy different fun. trigger: Built-in microwave , when approaches ball, will be triggered, increasing interactivity of . Automatic obstacle avoidance: Built-in intelligent sensor, will automatically move in opposite direction when encountering obstacles, ensuring safety of play. Waterproof design: IP54 waterproof level, can be used in various environments, easy to . Convenient charging: Built-in 500mAh battery, rechargeable, long use time, no need to frequently replace battery.