Simple, intuitive controls Single press the power button to cycle windspeed modes. Double press the power button to switch the working mode. Why you need this purifier Reduces airborne pollutants and hidden contaminants that can harm health by drawing air through the HEPA filter. Portable power options let you use the purifier where wall power isn't available. Key functions and performance HEPA filtration: captures fine particles and helps lower exposure to dust, pollen, smoke and other hidden airborne hazards. Batterypowered motor: the purifier motor is driven by the internal battery. The unit will not run directly from an external power source if the battery is depleted. Charging times: charges via a car USB port in about 3 hours; charges from solar power in about 12 hours (actual time depends on sunlight intensity). Maintenance HEPA filter replacement recommended every 3–6 months, depending on usage and air conditions. Compatibility and power notes Compatible with standard car USB charging and with solar charging. Solar charging time varies with sunlight. Important: the purifier requires a charged internal battery to operate. External charging sources replenish the battery but do not directly drive the motor when the battery is empty. Practical use scenarios 1. Incar air improvement: keep the purifier charged from your car USB to reduce dust, pollen and odors during commutes or road trips. 2. Outdoor and offgrid use: charge the battery with solar power to run the purifier at campsites or remote locations where mains power is not available. 3. Home backup or portable room use: charge the battery and move the unit between rooms to address local air quality issues without depending on a fixed outlet. What to expect Straightforward button controls for quick adjustments. Regular HEPA filter changes (3–6 months) to maintain filtration performance. Dependable charging options (car USB 3 hours, solar 12 hours) with operation reliant on a charged battery.