Operation confirmed. The remote control has no batteries and has not been tested. I received this from a friend last week. I have cleaned it to some extent, but there may be some remaining dirt or areas that I couldn't clean. Please understand. (I have not soaked the humidifying unit. Please do so if you are concerned.) The filter's lifespan hasn't expired yet, but as it is a used item and a consumable, please consider replacing it if you are concerned. (They are sold for around 2000 yen.) I plan to wrap it in bubble wrap and ship it in a recycled cardboard box. Please refrain from purchasing if you are overly concerned about details. DAIKIN MCK55UKS-T - Brand: DAIKIN - Model Name: MCK55UKS-T - Voltage: 100V - Power Consumption: 58W - Filter Model Number: KAFP080B4 Thank you for viewing.