To ensure that we meet your needs, OPOLAR offers one year warranty for defective products. Incorrect human operation, including but not limited to disassembling, burning, soaking, and dropping it, is not covered by the warranty.

Specification:
Model: F531
Speed Mode: Two Speeds
free angle adjustable usb fan with 2pcs of 2200mAh batteries, working hours can be used above 7 hours.

Product Features

• 【 Large Capacity Rechargeable Battery】 This fan can work with just one or both batteries. One battery can power the unit up to 3 to 6 hours and both combined can last for 6 to 12 hours.
• 【The Biggest USB Rechargeable Fan】 This desk fan reaches the limited size that a 5V USB powered and battery powered source can drive. With OPOLAR’s latest dynamic technology, the fan produces an exceptional amount of air and runs very quietly.
• 【Lithium Battery or USB Port As Power Supply】 The fan comes with 2 of the best quality lithium-ion 18650 2200mAh batteries. Each battery has been quality tested THREE TIMES to ensure the best condition before leaving factory; you can also power or charge the fan via USB to use with computers, power banks, or wall adapters.
• 【Metal Construction, Quiet Plastic Blades and Adjustable Head】 We’ve used industrial grade metal for the frame to enhance the construction and plastic blades to lower the noise. There are two speeds for your choice of air flow. The sturdy metal frame is able to be adjusted 360 degree up and down so you can choose the wind direction easily according to your height or position.
• 【One Year Warranty】 OPOLAR offers one year warranty against defects. Note: This fan cannot be charged with regular battery, except 18650 battery.