Acerpure Cool AC553-50W Air Purifier vs Gresta GS-300 Room Air Purifier comparison

Distant Spiral Air Flow & Easy Swinging: Effortlessly control the direction of your airflow with 90 degrees up and down swing and 80 degrees left to right oscillation. And quietly circulate clean air up to 21 meters. UVC Powerful Purification Technology Acerpure cool has 4 in1 filter as Pre-filter, Activated Carbon filter, HEPA 13 main filter and HEPA Plus+ filter. Pollution free home: Pre-filter removes pet hair & dander. Activated Carbon filter eliminates gases & odors. HEPA 13 main filter removes ultrafine dust and allergies. HEPA Plus+ filter eliminates bacteria and viruses. Effective Purification: it emits negative ions which capture ultrafine dust and PM1.0. Quiet Mode: Reduced noise and turned-off display make for the perfect environment for a good night's sleep. Save Energy, Save Money: with a DC motor, expect high performance of purification at a low energy cost. Safety Lock: It comes with a safety lock, so you don't have to worry about the mistaken touch by children and pet. Smart Sensor & LCD Display: Put your feet up as the Air Quality & Gas Sensor regulates the purifier speed automatically and LCD displays real-time air quality data.