About these items:All-Season Use: Offers 8 levels of cool air and 3 levels of warm air, adapting easily to seasonal changes, ensuring a comfortable breeze throughout the year.High-Density Purification: Equipped with a high-density HEPA filter, this fan captures dust, pollen, and fine particles, improving air quality and creating a fresh environment for your home.Rapid Cooling: Designed with a large airflow outlet and a maximum wind speed of 15.4 ft/s to 16.4 ft/s, it quickly expels heat and cools your room, providing immediate comfort.Versatile Functionality: Features multiple modes, including strong wind, sleep mode, and smart settings. It offers both touch and remote control operation, with an 8-hour to 9-hour timer for added convenience.Quiet Operation: The bladeless design ensures noise levels stay â¤55dB, making it ideal for bedrooms, homes with children, or pets, providing a peaceful and secure environment.Key Differences:Wind Speed: The wind speed ranges from 15.4 ft/s (UML-050) to 16.4 ft/s (UML-046JR), providing rapid cooling across different models.Size and Coverage: The UML-050 is the largest model at 40 inches, while the UML-030JR is 26 inches, offering a wider range of models for different room sizes.Filtration: All models come with a high-density HEPA filter for effective air purification, creating a cleaner environment.Timer: The UML-030JR includes a 9-hour timer, while other models like the UML-046JR and UML-050 feature an 8-hour timer.Power Rating: All models provide 30W cooling power, but heating wind power ranges up to 1200W, ensuring versatility for both heating and cooling.Specifications:UML-030JR:Power: 30WHeating Wind Power: 1200WMax Wind Speed: 16 ft/sNoise: â¤55dBOscillating: 80°Net Weight: 5.6 lbs / 2.55 kgSize: 26 inchItem Dimensions: Ï7.1 x 26.6 in / Ï180 x 675 mmFeatures: HEPA Filter, 8 Speed Settings, 9-Hour TimerUML-046JR:Power: 30WHeating Wind Power: 1200WMax Wind Speed: 16.4 ft/sNoise: â¤55dBOscillating: 80°Net Weight: 10.5 lbs / 4.75 kgSize: 34 inchItem Dimensions: Ï8.9 x 31.7 in / Ï225 x 805 mmFeatures: HEPA Filter, 8 Speed Settings, 8-Hour TimerUML-050:Power: 30WHeating Wind Power: 1200WMax Wind Speed: 15.4 ft/sNoise: â¤55dBOscillating: 80°Net Weight: 9.7 lbs / 4.4 kgSize: 40 inchItem Dimensions: Ï8.9 x 41.3 in / Ï225 x 1050 mmFeatures: HEPA Filter, 8 Speed Settings, 8-Hour TimerPackage Contents:UML-030JR:1 x Tower Fan2 x #7 Dry Batteries1 x Infrared Remote ControlUML-046JR:1 x Tower Fan2 x #7 Dry Batteries1 x Infrared Remote ControlUML-050:1 x Tower Fan2 x #7 Dry Batteries1 x Infrared Remote Control1 x Power Cable15.4ft/s