18x18x4mm Super Small Brushless DC Fan Ultra Tiny Miniature Mini Micro Smalleescription:High-tech miniature fan is suitable for industrial or automotive use and has remarkable air flow performance despite its small dimensions. Thanks to the extremely low power input, this fan is highly suitable for battery operated devices. It's permanently protected electrically against reverse polarity, blocking and thermal overloading. Due to the low rotor weight and precision balancing, it is virtually vibration-free. It is also insensitive to shock.100% new and high qualityRated Voltage: 5VDCOperating Voltage: 4.5-5.5VDCOperating Current: 0.45ASpeed: 13000RPMOperating Temperatiure (non blocking rotor): -10C - +65CMax. Air Flow: 0.9CFMMax. Air Pressure: 2.8mm H2OBearing System: Sleeve BearingLead Wire: AWG32Connector: NoneWiring: BLK-GND, RED-VCDWire Length: approx. 70mmPolarity Protection: YesNote:Light shooting and different displays may causethe color of the item in the picture a little different from the real thing.The measurement allowed error is+/-1-3cm.We highly appreciate all custome rsopinions to improvethe selling, also if anything you unsatisfied, please contact us for probable best solution. Thank youPackage Included:1Pcs 18x18x4mm Super Small Brushless DC Fan Ultra Tiny Miniature Mini Micro Smallest(If there are any problems with the product, please send us pictures.Tell us more details about this problem)