I purchased a total of 26 of these fans to go into two new computer builds in mid-2021 [5 fan set with controller x 4 count and 3 fan set with controller x 2 count]. The remote controls to adjust the RBG schemes are so handy. These fans push a lot of air while being quiet. The RBG LED effects are very cool and all synchronized through the controller. Paid about $36 for 5-fan set so if you value the controller at same price as each fan, you are looking at the shockingly low price of $6 per fan/controller.
SPECIFICATION (from the box): Model: AR12 Fan Dimensions: 120x120x25 mm Airflow: 48 CFM Rating Voltage: DC 12V Rated Current: 0.16 A Dimensions: 130x135x158mm Fan Speed: 1200+/-10% RPM Bearing Type: Hydro Bearing Noise Level: 24 dBA (MAX) Static Pressure: 1.8mm-H2O