This vacuum cleaner has a normal noise level of 70 decibel.
From Amazon
Makita DVC865LZX3 Twin 18V (36V) Li-ion LXT Brushless L Class Vacuum Cleaner - Batteries and Chargers Not Included
ITS
Makita DVC865LZX3 36V (Twin 18V) LXT Brushless L-Class Wet & Dry Dust Extractor - Body