It shows signs of use, but it's relatively clean. I haven't used wet cleaning. I purchased it about 5 years ago for 22,800 yen. It's very convenient because you can operate it from your smartphone. *Please check before purchasing as I'm not sure if the app is still available for download. You can also operate it with the included remote control, so I don't think there will be any particular inconvenience. I will run it once before shipping to confirm its operation. (This does not confirm all functions of the remote control and smartphone operation) I have a cat. Please purchase only if you understand that this is a USED item. App for scheduling and operation Simultaneous vacuuming and wet cleaning Take-One IoT appliance linkage possible The following is a product description from the official website. ______________________________ This robot vacuum cleaner can handle both wet cleaning and suction, so you'll be happy with the sparkling clean floors! Product Name: Robot Vacuum Cleaner Take One N1 Size: Main unit: Width 300 x Depth 300 x Height 70 Main unit weight: 3.6kg Specifications/Specs: Suction cleaning, wet cleaning, automatic collision prevention, fall prevention Water tank capacity: 100ml Dust box capacity: 400ml Charging time: 240-300 minutes Battery capacity: 2500mAh Suction power: 800-1300Pa Notes: *The app function of this unit is designed on the assumption that a stable and fast fixed-line (optical fiber) and a stationary router are used, so mobile routers, pocket WiFi, and tethering using SIM cards or LTE mobile lines are not guaranteed to work. Please be aware of this. Frequently Asked Questions: How high of a step can it overcome? → Up to 1cm Do not put anything other than water in the water tank, as this may cause a malfunction.