Unfortunately, I'm returning the headphones. I've been looking for a way to safely listen to music while cycling but this isn't a very good solution, the enjoyment of the music is so weak that it comes out similar to not listening to anything. I first tried a cheap variant of the bone conduction headphones from Niceboy, I didn't expect much from it, but I was still disappointed. The sound was very bad, tinny. No bass, very weak volume, sound is unpleasant at maximum value. For calls, audiobooks, podcasts, etc. would probably be fine, but it's useless for music. I was then intrigued by this model from Shokz because the manufacturer claims to have amplified the bass in the headphones. Bone conduction technology is not able to reproduce bass well (the response is from 20 Hz, but frequencies below 100 Hz will not reach your brain from these headphones), so this model is supposedly bone conduction technology combined with something that resembles classic speakers, so the headphones have air grilles compared to the previous model, but unfortunately reduce the resistance to dust and water (only IP55). So I thought that the sound of these headphones might be completely different than the cheap Niceboy variant. Unfortunately, disappointment came again. Although the sound quality is much better, the headphones could probably be used for music where bass is not important. Still unusable for electronic music, or anything where you want at least a little bass. When trying to reproduce bass, the headphones just vibrate on the cheekbones, which is not very pleasant and you don't hear any real sound of the lower frequencies from it. The overall volume is again weak, easily drowned out by ambient sounds - on a bike, which I think is the main use of such headphones, the sound is easily lost in the wind noise once you go a bit faster. I thought headphones might be the solution for music on the bike, but much better sound in the result you get from a small portable speaker (I compared with the old JBL charge 3, listening from a distance of 1 m) and sound completely different without having to wear something on my head. Apparently even 'pocket' speakers would play them. So if you're looking for a way to listen to music on the bike, I don't recommend bone conduction headphones, you'll get more enjoyment from a small speaker, which will disturb the surroundings a bit, but unless you're riding on very busy trails and keeping it too loud, no one around you will hear much and you'll still get much better sound than from these headphones. On the other hand, if you want to listen to audiobooks/podcasts/phone calls, these headphones are great, they are very comfortable. But on a bike you will still have the problem of wind/environmental noise drowning out.