RoboVac 11S sucks up dirt and dust with 1300Pa of suction for a spotless clean you can see and feel. Large wheels roll over carpets and climb over door ledges to get to the mess. RoboVac uses drop-sensing technology to avoid falling down stairs and off of ledges. RoboVac automatically returns to the charging base when power is low, ensuring its always charged and ready to vacuum. RoboVac combines a dual-layer filter and one high-performance filter to acheive a clean home. Multiple cleaning modes and a pre-set vacuuming time ensure an effortless, thorough clean while you do other things or nothing at all. RoboVac cleans up to 100 mins per charge, so you get to enjoy a completely clean home from a single charge. A large 0.6L dustbox holds more dirt per clean to reduce the frequency of emptying.