Pet oxygen concentrator, flow rate 1.0-6L/min, silent design 48dB, filter replacement approximately every 3 months. - Brand: NEVOTON - Model Name: MAF mini 1.0 - Application: Pet oxygen concentrator - Flow Rate: 1.0-6L/min - Noise Level: Approximately 48dB - Filter Replacement: Approximately every 3 months - Size: 5000g Thank you for viewing. Please read the following　↓↓↓ ・To ensure a smooth transaction, returns are not accepted except for product defects. ・Please refrain from purchasing if you are sensitive to items stored at home. ・Due to amateur inspection, there may be areas that are overlooked. Please understand. ・The color of the product may differ slightly from the photos depending on the lighting. Please understand. Feel free to request additional photos. ・Please also read the profile.