Connection: The connection to my s10+ is solid and reliable. They managed to get about 100 feet in the open area of my store. Battery: I don't know if I have a bad kit or what, I had the left one in mono and it lasted maybe 2 hours at medium volume. nowhere near the advertised 8 hours. The case also only charges the earbuds once when fully charged. Sound: Cleanliness is good when the tips match the ears. I tried all 3 kits and the sound was either thin because it would be too tight or too loose resulting in the highs being weak. when it was just right, it was great. Design: They are very large. I mean BIG. They are 2x thicker than the Yineme I ordered a year ago and have a 9 hour battery life. they are also VERY heavy on the ear. they don't fit well or wobble excessively. All in all: if you plan on sitting still, have just the right ear and don't anticipate long-term use these are for you, otherwise I think they really need an overhaul. They do not correspond to the status of the builder name.
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