4 FAN MODES & FLEXIBLE TIMINGThis air purifier for bedroom has 4 adjustable speeds (/I/II/III/Sleep), you can adjust fan speeds according to your needs to achieve the best effect. You can also turn on the timer when you sleep or go out to save energy, which is 2/4/6/8 hours.
CHILD LOCK & FILTER MAINTENANCE The thoughtful child lock feature prevents mishaps from accidental presses, giving you peace of mind around curious kids and pets. For effortless maintenance, our smart filter indicator automatically alerts you when a replacement is needed. For optimal performance, we recommend replacing the filter every 3-6 months using genuine brand filters. (You can search B0FMRDKYKX on Amazon to purchase official replacement filters. )