1. Product noise: 55db 2. Running time: about 90 minutes 3. Product size: 32x32x7cm 4. Packing size: 41x10x34cm 5. Charging time: about 3 hours 6. Product function: one-key start, absorb dust and hair, automatically change direction, etc., built-in 1500 mAh lithium battery 7. Warm reminder: This is an intelligent sweeping robot with integrated design of sweeping, suction and dragging. It will turn when it encounters obstacles, relying on the bottom to attract dirt, dust, dog hair, floor hair 8. Packing list: sweeping machine x1, brush x3, USB charging cable x1, manual x1, rag x1