I always thought this noise canceling stuff was full of crap be honest!!! But I listen to lectures while I mow the yard

Standing right in front of the microwave, putting the earphones in without turning them on cut out some of the noise

I was also unaware, but there is a volume control on the side of the battery box that works when the unit is running or when it is off

com/Earphones-Plus-EP-BLK-TRI-4B-S-earphone-replacement/dp/B011W10YTM/ref=sr_1_16?ie=UTF8&qid=1463338252&sr=8-16&keywords=replacement+earbud+tips)I am very happy with my purchase

I really thought this was a great product ! I only had them for a short time

WOOOOW!!! The difference between when the noise cancelation is turned on vs off was unbelievable!!! Normally I can hear enough to know if I'm overloading the engine and need to slow down, but with these on I can barely hear anything other than the lecture I'm listening to!!!Even IF a $200 pair would work better, why pay the money?!?!? For my situation, these are perfect!!! I bought these because I have over the ear noise canceling that work great but are super bulky and I was unable to sleep on the plane with bulky headphones on for long flights