Specifications: Fan speed (rpm)930 / 1600 / 1900 Airflow [m per h]850 Number of batteries0 Charger includedNo Voltage/Power18V Features Part of the ONE+ ™ WHISPER™ series characterized by reduced noise levels and quieter operation Tilting head provides direct and targeted airflow 3 speed settings for individual performance and runtime Multiple suspension points for different mounting options**