Product Detail Up to 30F cooler: best used in hot and dry environments. Adjustable speed control. 30db whisper-soft turbine system. 90 degree vertical airflow control. Produces a 15 knots 'mighty' breeze measured at outlet vent. . The "Handy Cooler - World's first Evaporative Personal Air Cooler / Cooling Fan that is hand held! Battery-operatable PINK TRIM v2.0" is best product for you. We recommended Handy Cooler - World's first Evaporative Personal Air Cooler / Cooling Fan that is hand held! Battery-operatable PINK TRIM v2.0