Excellent headphone. Have not tried in water yet.
I still could not even get the Language to change consistently. The sound quality is also not good. The headset looks like two big speakers. The sound could be heard even at 50 - 100 cm away. It seems not to function as bone conduction headphones, but as 2 big speakers. The packing was good & had a fancy box. But mp3 transfer (very slow 100-350 KB/s) & play back worked, mic works but students complained my voice Sounded dim/low. I wished it could have a lot better user manual (currently only a piece of paper), being : easier to use, less buIkier, and having better sound. The Seller tried to help out, by sending 3 videos, but they did not contain useful information.
I still could not even get the Language to change consistently. The sound quality is also not good. The headset looks like two big speakers. The sound could be heard even at 50 - 100 cm away. It seems not to function as bone conduction headphones, but as 2 big speakers. But mp3 transfer (very slow 100-350 KB/s) & play back worked, mic works but students complained my voice Sounded dim/low. I wished it could have a lot better user manual (currently it is only a piece of paper), being : easier to use, less buIkier, and having better sound, less buIkier. The sound is also of bad quality I wish I can send it to you, so that you can hear it for yourselves. I am really disappointed, if the seller pays for the post cost & insurance - I will send it back But I want a full refund.