Portable 6-Speed USB Evaporative Cooler

Measures 18.5 cm (diameter) × 29 cm (height); weighs 1.2 kg; features a 300 ml removable water tank with level window and screw-top seal; main chassis fabricated from scratch-resistant ABS with seamless cylindrical construction and integrated airflow ducting. Employs proven evaporative cooling physics — ambient air drawn over a saturated wick filter induces phase-change cooling — resulting in immediate, perceptible temperature reduction (typically 3–5°C delta in ideal conditions) and concurrent humidity increase. Six fan speeds provide granular control: Speed 1–2 for silent overnight use; Speed 3–4 for balanced office cooling; Speed 5–6 for rapid refreshment on warm days. Certified 25dB(A) noise emission ensures non-intrusive background presence. The 6-hour timer activates with first power-on and displays countdown on integrated LED screen. Humidification is continuous and proportional to fan speed and ambient dryness. Designed for real UK living contexts: validated in 3m × 3m bedrooms, 2.5m × 4m home offices, and 2m × 2.5m dorm rooms; compatible with standard UK USB power infrastructure — no proprietary chargers or adapters required.