Really nice TWS ear buds Very happy for this purchase, I am not a big music fan, most time I listen audio books, or watch youtube. 1st point to love this one, great battery life. the battery can last for 4 1/2 hours+ after a full single charge, with case, easley goes a day or two. 2nd point to love, no lag, when I am watching YouTube, the mouth and sound matching perfectly, maybe a slight lag? I don't notice it any way. 3rd, the connection, very stable and very fast. Open case, connected. 4th, dude, it is under $40 AUD. What else brand has this great earbud for this price? Overall, a great product. But, if you are looking for strong bass, forget about it. And look somewhere else.I suggest you to spend $200 plus to buy a nice pair of earbuds with that kind of quality sound you need.