Paired easily with nice sound. Not much bass.The sound is very good for the small size and does transmit well as described. More comfortable (and sanitary) than "in ear" type such that I sometimes forget I'm wearing them. I can't comment on the water proof nature as these have been kept dry (mostly video games), but the battery life should satisfy most people. Personally, I need something 12 hours or more sometimes and they fail before then - but they keep up for a solid 8 hours. The pairing and connecting to my PC is sweet; quick and automatic as soon as I turn them on. They maintain connection moving around a large, 3 story house so long as I don't go outside. Highly recommended.I'll start off by letting you know that this is my first pair of bone conducting headphones.I was surprised that I could hear them when I was holding them in my hands. I began to wonder if their were open air earphones instead of bone conducting. Putting them on sounds better; its not the best sound, but definitely not the worst.I rather expected them to be quiet until I put them on my head, but they are quite loud in my hands, so people around you will definitely hear your music. I feel like they've got no advantage over an open air headphone. Heck my old neckband with speakers in it gives comparable sound quality with less noise to the people around me. (I was always surprised when people would say they could barely hear the sound coming out of the neckband, but then the speakers are aimed directly at my ears on that. This bone conduction piece seems to have 360 sound broadcast which is clear even 6 meters away. I can imagine that this would be pretty disruptive in a quiet environment.I'll give it a few days before I decide whether I want to keep them.this has been the best head set ever with over 10 hrs of battery life. I listen to it for 11 hours a day and is very comfortable tooThey work for yard workSound QualityIt would not pair up to my android that really sucks because I liked how they fitSound was great, not having in my ear was great....then it stopped working/charging just after two months主に自転車で走る時に使ってます。周りの音も聞こえるしBGMがあるとサイクリングも快適です。フィット感は少し緩い気がしますがズレ落ちる事は無いです。音質は個人の感想ですがスマホのイコライザー等を使えば以前に使ってたワイヤレスイヤホンと大差無いです。また、耳栓をして聞くと割と普通のヘッドホン並には良い音だと思います。そもそも本気で音質を求めるなら骨伝導は向いて無いと思いますよ。大音量、高音質は期待しないでください（スマホの性能とも関連？）もちろん音は漏れます。ウォーキングやギター練習などに使っていますがこの価格でこの性能であれば十分かと思います私は片方の耳が悪く普通のヘッドホンではバランスが悪いのですが これを使うとうまく聞こえます（骨伝導の効果でしょうか）眼鏡かけてマスクしても簡単に装着できますが確かにもう少し締め付けがあるとよいのかもしれません。平均より頭の大きな日本人ですが、これは全くフィットしない。ランニングどころの話ではない。ガバガバなので、自分に聴こえる音量だと周囲にもダダ漏れ。そもそも骨伝導では無いです。スマホでラジオの習慣有。ノートパソコンでも何かと便利。耳を塞がず、首を振っても外れず、邪魔なコードも無く、思ったより長時間使えて、私の使用法にはピッタリです。音楽をより良い音で、、、なら別のデバイスで。耳を塞がないので作業の途中でも少しつかえるかな。場所により変わるけど