describe:1. Large cleaning area: This robot vacuum cleaner can clean a large area of 120-150 square meters.2. Anti-collision system: It has intelligent anti-collision and front soft bumper to protect the furniture.3. Multiple cleaning modes: automatic cleaning, fixed-point cleaning, edge cleaning, and maximum cleaning mode functions make cleaning so easy.4. Easily cross furniture and under the bed, making it cleaner and more comfortable.5. Applicable floors: marble, ceramic tiles, wooden floors and other flat floorsSpecification:Material: ABS shellSize: diameter*height--27.86.8cmBody battery: 3.7V 2000MAHWorking time: about 60 minutesCharging time: USB charging, about 150 minutesCleaning area: 150Working voltage: 3.7VDust box: about 400MLColors: White, BlackOperating mode:1. Switch mode: Press the host switch, the sweeper enters the working mode and the working light is on. Press the main switch again to turn off the sweeper.2. Charging method: Connect the Micro-USB head of the USB cable to the charging port of the sweeper, and connect the USB head to the converter for charging.3. Charging status: The charging indicator light is on.Indicates charging is in progress, OFF indicates charging is complete, and the general charging time is about 4 hours.Functions: One-button start, sweeping, mopping, vacuum cleaner, USB charging, universal travel, automatic obstacle avoidance, anti-fall, low noise, considerate, low repetition, high coverage Cleaning the dust box:1. The dust box is located at the bottom of the machine and can be rotated outward by unplugging the plug.2. Open the dust box, clean the dirt inside, and wipe away the residue with a wet or dry cloth.3. Place the dust box back into the machine.