This portable 3-in-1 personal evaporative air cooler combines localized cooling, multi-mode humidification, and steady air circulation into a compact, eco-friendly design. Powered via USB with an integrated rechargeable battery, this versatile cooler is highly optimized for office desks, bedrooms, and outdoor camping trips. Technical Specifications Product Type: 3-in-1 Personal Evaporative Air Cooler Chassis Material: Premium ABS Plastic Power Supply: USB Powered (5V / 2A) Rated Power: 10 W Battery Capacity: 2000 mAh Fan Speed Settings: 3 Gears Maximum Wind Speed: 3.5 m/s Oscillation Angle: Approximately 70° Auto-Oscillation Water Tank Capacity: 350 ml Atomizer Configuration: 3 High-Power 1.0 MHz Atomizers Atomization Volume: 50 ml/h Programmable Timer: 2 / 4 Hours Noise Level: 45 dB Functional Features 3-in-1 Eco-Friendly Cooling: Combines a standard ventilation fan, an evaporative cooler, and an ambient humidifier in a completely Freon-free configuration. It operates on a low-energy 10W draw to help minimize electricity expenses. Ultrasonic Fine-Mist Humidification: Utilizes high-frequency 1.0 MHz resonance atomizers to break down water molecules into a super-fine cooling mist, hydrating indoor air to prevent dry skin discomfort during warm seasons. Customizable Wind & Mist Modes: Offers 3 distinct fan speeds alongside 3 flexible mist options (continuous spray, interval spray, or fan-only ventilation) to tailor the breeze to your immediate environment. Smart Top-Fill Tank & Auto-Shutoff: Features a wide top-opening lid for easy water or ice cube additions, providing up to 2 hours of continuous misting. For added safety, the misting function automatically stops when water runs dry while the fan remains operational. Condensation Management: Engineered with a built-in collection cistern at the base to catch natural condensation droplets during heavy cooling, paired with a rear drainage hole for effortless maintenance. Highly Portable with Built-in Timer: Features a lightweight profile with an integrated carrying handle and a customizable 2- or 4-hour auto-off timer, making it an ideal companion for off-grid camping or overnight use.