With powerful 40mm drivers and exceptional acoustics, the Hesh Evo delivers audio quality refined over four generations of continuous improvement. The clear, rich sound rivals the most expensive headphones on the market. The Hesh Evo is the unsurpassed everyday headphone for those who want to keep it simple. In addition to great sound, it offers just the right amount of extra features to make your life easier. The Hesh Evo features built-in Tile -finding technology. If you ever misplace your headphones, you can easily "ring" them via the Tile app. That way, what may have seemed lost is quickly retrieved. It's hard to remember to plug in all your devices. That's why the Hesh Evo offers an enduring 36 hours of battery life. And if the battery ever runs out, the quick charge feature provides 3 hours of listening pleasure with just 10 minutes of charging.