Review on 🎧 Sony WI-XB400 Extra Bass Wireless in-Ear Headphones (Blue) with Knox Gear Memory Foam Tips & Silicone Earbuds (6 Pairs with case) Bundle (2 Items) by Stoyan Stoyanov ᠌

Not worth buying. All positive qualities are blocked by background noise. If there is a large percentage of audiobooks in the playlist, definitely look for other models - it's impossible to listen because of the noise. Pros: The battery lives long enough, quite a bass sound for the money. Has some cons: Very loud background noise! Didn't expect from Sony. There are second Sony WI-C400 headphones, their background noise is an order of magnitude quieter and almost indistinguishable at other frequencies.