No. It is crazy how great this works. The sound is clear, yet you can still hear things around you. Your ears are’t plugged, or get itchy from ear pods.

The bone earphones works deliver the sounds via the jawbone. Yes, you can hear the outside noise. You adjust the volume of the headphone to be however loud you need it to be in comparison to the ambient noise. In noisy environments, you’ll probably want to use the included foam earplugs if you want to hear the headphones well. If you don’t, you’ll have to turn it up so loud other people can hear it. It is very nice for safety reasons. Great for running, biking, hiking, etc were hearing things around you is important.

Yes, I wear glasses when I run and the bone conduction headset haven’t fallen or even shifted. The Bluetooth bone headphone is not adjustable but very flexible and I have no trouble doing HIIT training with these. The headphones fit most of people heads.You can always replace or return them, if not satisfied.

This bone conduction headphone is not suitable for swimming. It can be waterproof and Sweatproof in sweaty sports like running, cycling, gym, fitness ect.

45 days free return and quick refund, 2 years free replacement for product quality issue. Package Included: 1*Bluetooth Headphones, 1*USB Charging Cable, 2*Sponge Earplugs, 1*Manual. In noisy places it is recommended to wear sponge earplugs.

The bone conduction headset allow you to answer phone calls, so it does possess a built-in microphone & it does well with noise cancelling.