$9.59 (Reg.$15.99) for QINUKER Battery Operated Clip-on Fan @Amazon

Amazon has QINUKER Battery Operated Clip-on Fan, Portable USB Rechargeable Desk Stroller Fan on sale for $9.59. 

Price:            $15.99
Discount:      $6.40 via coupon code 9AWY838Y
Shipping:      Free Shipping on orders over $25 or with Amazon Prime
Final Price:    $15.99 - $6.40 = $9.59

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• 【4 ADJUSTABLE SPEED LEVEL】 - This mini desk clip fan has a 4-speed level(Low/medium/high/sleep mode)can adjust by pressing the power button repeatedly. The sleep mode can avoid headaches, stuffy nose caused by prolonged strong wind and meet the physiological needs of people. And 4pcs fan blades, strong wind, wind distance up to 3m. Brushless motor makes the fan durable.
• 【RECHARGEABLE BATTERY OPERATED FAN】 - With the 4000mAh Rechargeable 18650 lithium-ion battery, the desk fan is extremely portable as no cable wiring needed which can be used both indoors and outdoors. Fully charged batteries can continually work up to 18 hours on a Minimum wind, about 3-4 hours on the maximum wind. This clip-on fan supports fast recharge, recharge time can be decreased to 5 hours with 5V/1A adapter.
• 【2-1 VERSATILE DESIGN】 - This battery operated clip fan is not only a perfect choice for people used in their office but also suitable for mums used in their baby strollers. It is lightweight and you can clip it to anywhere you need. Do not like others, this clip is very strong and will not slipping away. And you can also stand it on the table alone as a table fan.
• 【360 DEGREE ROTATION】- 360 degrees rotation horizontally and vertically which can keep you cool in every angle. Best clip on fan and desk fan for indoor & outdoor activities. When you go outside, you can put it in the bag and take it to anywhere, especially suitable for summer travel or outdoor sports.
• 【MULTIPLE CHARGING WAYS 】- With a wide range of USB interfaces, you can use the USB charging cable link to computers, power bank, laptops and other devices to enjoy cool wind no matter where you go.