With unique proprietary technology, Yamaha has created the only headphones and earphones that truly adapt to you and your environment. Be transported to the front row of your favourite concert or immerse yourself in the movie. Benefiting from Yamaha's unrivalled expertise in acoustic and electric audio, the TW-E3B delivers brilliant performance - whatever the content. The compact housing ensures a comfortable fit, even for smaller ears. The ear tips are available in four different sizes and fit perfectly in your ears. Even over long periods of time, you'll barely feel these earphones, while enjoying the highest quality listening, exceptional isolation and maximum comfort. You want to listen to your favourite songs around the clock. That's why Yamaha chose a long-life battery that gives you up to six hours of music on a single charge. With the charging case, you can even use the earphones for 24 hours without interruption. In addition to listening to music, you can also watch long movies wirelessly via your smartphone, so you almost never have to miss out on your favourite content.