noisy but works [SEP] when using this in my ears there is a lot of squeaking and clicking and scraping sounds so if that is the sort of thing that bothers you just stick with battery operated trimmersi wanted this because i was tired of battery operated trimmers breaking down and having to buy a new one all the time especially in this day and age of shortages and not being able to buy replacements so i am glad i have this but i am going to buy an electronic because i just do not like that clicking scraping screeching noises in my ear