Patented Air Multiplier projection for powerful cooling.(2) Now connected with MyDyson app control.(1) Acoustically engineered to be quiet, even at full power. Whisper-quiet at 29dB in Sleep mode, plus a dimmed display. No blades. No choppy air. (1)Air Multiplier technology patented in Au, Cn, Jp, Kr, De, Gb, Us. For patent information see: www.dyson.com/patents.(2)App functionality may vary per market. Requires Wi-Fi and app enabled device. Standard data and messaging rates may apply. Requires iOS version 15 or above, or Android version 8 or above. Your mobile device must have Bluetooth 4.0 wireless technology support. The Bluetooth word mark and logos are registered trade marks owned by the Bluetooth Sig, Inc. and any use of such marks by Dyson is under license.(3)In Sleep mode.(4)Compared to conventional carbon motors.