The Besdio Active Noise Cancelling Wireless Stereo Headphones are some very nice Bluetooth headphones. i frequently buy earphones coz they are easy to carry. They look and feel just like the original. I’ll be ordering another . This product is obviously inferior and not designed or manufactured properly to do what they are meant to do! Although other people said it was easy to put together, it wasn’t intuitive to me and I Putzed around with this much longer than necessary. Pop/crackle-free. The 75 has more padding on the head strap and larger ear cups, as well as active noise cancelling. However, either my sweat or saltwater had a chemical reaction with the material(s) on the underneath of the slide that makes contact with the top of my foot. I have 4 pairs and absolutely love them!