There is no mechanical friction, and the lifespan exceeds 10,000 (3-5 times longer than brushed type). It is resistant to high and low temperatures, dust-proof and moisture-proof. Its performance does not decline even after long-term use. FOC vector control + ground material sensing, carpet boost, floor energy saving. When the dust box is full, it automatically replenishes power. The suction force is stable and does not weaken throughout the process. It adopts aviation-grade volute and 9-blade metal fan blades, with a super large air volume of 20 liters per second. It forms an "air waterfall", and large particles, hairs, and debris are completely sucked away without any residue. Triple noise reduction (nano sound-absorbing coating + silicone suspension + airtight sealing), standard mode ≤ 55dB, night mode nearly silent, without disturbing life and sleep. The optimized electromagnetic and air duct design provides stronger suction and more energy saving. Under the same power consumption, the battery life is improved by 40%. The strong mode lasts for a long time without power loss.