I will let buyer review speak for itself: I first bought a sleep earphone set but it had very little bass. After studying specs on many sleep earphones I was 100% sure of what to buy. This LX-410 Mini Sleep Earphones are perfect. Since I am a performing musician, I was totally surprised by the extreme high quality of music sound. From the bass notes to the frequency of 20kH is phenomenal and made me smile. It was way better than expected. Being an electronics quality engineer I have reasons to give this product the highest rating. It sits snug in your ears, do not fall out when doing sport. Perfect for sleep. I would like to buy a 2nd pair to keep safe for when I'm 90 years old. Perfect price.

Good quality! If the bass can more deeply will be more better !👍