O2COOL 10-Inch Portable Desktop Air Circulation Battery Fan - 2 Speed - Compact Folding & Tilt Design - with AC Adapter BATTERY -OPERATED PORTABLE FAN. You can cool off when youre at home, work or outdoors with our 10-Inch Portable Fan. Perfectly sized, it wont take up much space and features a convenient folding design and built-in handle for easy storage and transport. Dual DURABLE CONSTRUCTION. Durably crafted using sturdy plastic construction for long-lasting strength and use, this portable fan boasts a patented fan blade design which extends the battery life while maximizing airflow.power sources TWO-SPEED OPERATION. With a powerful 10-inch blade, this fan offers high and low speeds to accommodate your needs. Both deliver refreshing air with minimal distracting noise. Adjust the tilt of the fan for directional airflow and ideal cooling comfort. EASY TO USE. Position fan face down, slide out the battery door and insert batteries following (+/-) marks, then replace door and slide switch to your preferred setting. To operate fan using AC power (120-240 VAC, 50-60 Hz), use supplied adapter only. DUAL POWER SOURCES. For added convenience, the fan runs on six D-cell batteries (not included) or you can plug it in using the included AC adapter. Inserting the adapter plug into the fan disconnects the installed batteries from the circuit.