Clean your floors more effectively and efficiently with Roborock E4. Every movement it makes is precisely monitored by a suite of precision sensors. Combined with an internal map of walls and obstacles it encounters, it knows where it has been and what is left to clean. It moves up to 10% faster, while an 11% increase in suction and double the battery power delivers deeper, longer-lasting cleaning. Combine suction with mopping to eliminate the fine dirt that other vacuums may miss. Use the app to set detailed schedules for different days and even suction levels. Using gyroscopes, OpticEye motion tracking, and a bumper, E4 closely tracks its movements, edges of rooms, and obstacles. It knows where it has been, and can calculate where it needs to go. Because it moves up to 10% faster, it finishes cleaning quicker. Onboard gyroscopes monitor minute changes in the angle of motion and recognize if the robot has been flipped. A laser and LED-based OpticEye motion tracking system provide high-frequency analysis of travel distance. Gyroscope and motion tracking data combine to create an internal map used to create logical cleaning paths. Make your floors shine and remove fine particles that other vacuums may leave behind with the easily attached mop. Now 28% larger, the upgraded E4 mopping system uses innovative hydraulics to let you adjust the water flow to meet different cleaning preferences. Able to climb up to 2cm (0.8in), E4 roams smoothly around the home, over thresholds and carpets. At the same time, a 100% larger 5200mAh battery gives it the energy to vacuum up to 200sqm (2152sqft) on a single charge. Anti-tangle main brush, side brush, and omnidirectional front-wheel resist tangles better, keeping E4 cleaning without interruption. Extremely large homes can be cleaned effortlessly using Auto Top-Up. E4 knows if it hasn’t finished a job so if the battery runs low it will return to the dock for a top-up charge and continue where it left off. Your phones is all you need for control. Start cleaning from anywhere, set schedules, choose cleanup modes, check on cleaning progress in real-time, and more. After a cleanup, review a completed map to make sure E4 has covered your entire home.