HenWa Mini USB Air Condition Bladeless Portable Refrigeration Fans Desktop, Red Size: 173cm (L) x 95cm (W) x 35cm (H) (+/-10%); Mini and portable, you can use on desktop or carry it by hand outside Stable soft and nature wind, keep the air humidity, suitable for office, home Bladeless fan, Air Multiplier, produce continuous natural breeze, suitable for baby carriages, safe and reliable comfort Powered by USB cable(included) or AA batteries(not include),indoor and outdoor use are very convenient Power saving, the battery can drive the cooling fan for up to 5 hours Special design, streamline and fresh appearance, environmentally materials