Methodical Cleaning: Logical Route Planning, intelligent navigation, and a Z-shape route clean your floors effectively and quickly. Infrared-sensors help avoid collisions, and cliff-sensors for preventing accidental falls. An anti-tangle main brush and side brush keep E4 cleaning without interruption. 2-In-1 Vacuum and Mop: Get brighter floors with simultaneous vacuuming and mopping. Get up to 2000Pa of power suction with minimum noise and a super-slim 3.55in design. Low enough to reach under beds, sofas, and areas where dirt hides. App & Voice Control: Schedule cleanups at anytime and anywhere with the Mi home app. Start and stop cleaning with Amazon Alexa. (Note: No separate remote control provided). High-Capacity Battery and Auto Top-Up: A 100% larger 5200mAh battery means enough energy to clean up to 2152sqft. Auto-Top-up means E4 will return to the dock when low on power, recharge, and then pick up where it left off. What you get: 1* E4 Robot Vacuum Cleaner, 1* E4 Water Tank, 1* Charging Dock, 1* Power Cable, 1* User Manual, and our worry-free 12-month warranty. Any questions, 24 hours customer service is available at 1-855-960-4321