Long-lasting out of expectation, Kyvol Cybovac E20 provides a non-stop cleaning up to 2.5 hours* before it automatically gets recharged itself when the battery is low. Tested under the ideal condition at Level One suction power Auto Recharge Function, When the battery level is below 12%, the robot will automatically go back to the charging base and get fully prepared for the next perfect clean. 3 Cleaning modes to choose from There are 3 cleaning modes for your choice: Auto Mode for random cleaning, Edge Mode for corner; edge cleaning, or Spot Mode for cleaning hard-to-clean areas. Set your No-Go areas Simply set No-Go areas by the magnetic strip, with the high-precision sensors detecting the border, Kyvol Cybovac E20 only cleans the areas you need. Provided in the package for free Kyvol, always at your service. You are empowered to use versatile functions with only a few taps on the screen, anywhere, anytime. One key start, schedule, cleaning mode switch, consumables replacement notification... All in one--Kyvol App.