
When I first received this, there was a bit of noise. It was strange, after prolonged use, it disappeared. The battery life has improved the more I use it. I often leave it on from midnight to 9am, it still gets almost a full charge. When I first got it it wouldn't have taken that long. The more I used, drained and recharged the battery, the longer the battery life got. I never have to worry about running out of battery which is what I was looking for. I don't use it for midi. While it sounds pretty good to me, I use it while my husband is sleeping. I took the ice cream with me on the plane, very convenient, it folds well, but they are large. A good product. Update it's July now and they are sturdy and I'm very impressed. I used to buy new skull and crossbones sports candy every 6 months. It costs money. No noise yet. The volume gets high. Crystal clear phone calls and very easy pairing!

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