Quality assurance, after-sales guarantee, if the received product does not work or can not be turned on, take a photo to contact the seller, free replacement. TECHNICAL SPECIFICATIONS Power supply input: AC 100V-240V AC, 50 / 60HZ Main materials: ABS ? Net weight: approx. 1.72 kg Water tank capacity: approx. 2 liters Cable length: approx. 2.4 meters Dimensions of the unit: approx. 240X137X365 mm Dehumidification capacity: approx. 600 ml - 700 ml / day (based on 30 ° C, 85% relative humidity) Suitable room size: up to 40 square meters Best working environment: 25 ? ? 85% relative humidity If it does not meet your expectations or does not work, please contact the seller directly for a refund.