I tried these out flying in the back of a 4 engined cargo plane. They worked perfectly at cancelling the engine and propeller noise, every now and then I actually had to turn the volume down. I used them constantly for 6-7 hours with noise cancelling mode ON and had plenty of charge, I also found them very comfortable to wear and had none of the pressure hot spots that you sometimes get with headphones. Very happy with this product and I'm chuffed that I only paid around 15% of the price of the comparable top brands. I have tried using them during a phone call and they worked fine, however not being used to making calls that way means I will probably not use them for that purpose in the future. I suggest this product is well worth considering if you are budget conscious.