<p>FAQ:</p> <p>1. It is safe to use for 48 hours continuously for 48 hours, but to ensure that the device can be used for a long time as possible, it is better to rest the device about 20-30 minutes per 4 hour.</p> <p>2. If the machine is stored properly, the lifespan of the machine is about 30,000 to 40,000 hours!💗</p> <p></p> <p>Specifications:</p> <p>Acid- concentration: 30% - 96% (±3%) adjustable</p> <p>Input Power: 120W</p> <p>Impression voltage: AC 110 V / 60 Hz</p> <p>Ambient Temperature: 20-104°F (10-40°C).</p> <p>Relative Humidity: ≤80%</p> <p>Atmospheric pressure range: 869 hPA-1060 hPA</p> <p>Dimensions: 12.2 x 11.6 x 15.0 inches (31.0 x 29.5</p> <p>Net Weight: 14.2 lbs (6.5 kg).</p> <p>Package includes:</p> <p>1 x Main Acid-gen Concentrate Generator</p> <p>1 x Nasal Acid - Tube.</p> <p>1 x Remote Control</p> <p>1 x Power Cable</p> <p>2 x Filter Felt</p> <p>Filter sponge x 2</p> <p>1 x User Manual</p>