The 'e' stands for 'evolved', being an upgraded evolution of Bowers & Wilkins' PX7 S2 wireless noise-cancelling headphones. Taking inspiration and learnings from the company's flagship PX8 model, plus a re-tuned acoustic platform, you'll be able to hear what your music really sounds like. Shut out the distractions of the world and hear your favourite music as the artist intended, in lush comfort. Evolved Bowers & Wilkins audio PX7 S2e combine a 24-bit Digital Signal Processor, enhanced with learnings from the brand's flagship PX8 headphones, with custom-designed 40mm drive units, which are carefully angled inside each earcup for a truly focused, engaging listening experience. So you can experience your music exactly as the artist intended and immerse yourself in every detail of ever y performance. Bluetooth supports aptX HD to ensure the best possible wireless connection. Cancel outside noise, let the music shine The PX7 S2e use a total of six microphones for outstanding noise cancellation that shuts out unwanted intrusions, but crucially, without harming your music's dynamics and energy. As an added bonus, they also provide crystal-clear quality for calls from your smartphone too, even in noisy environments. Music app Easily customise settings, or launch your phone's voice assistant, with the Bowers & Wilkins Music app on your smart device (available on iOS and Android). More than all-day battery life The PX7 S2e will keep you immersed in premium Bowers & Wilkins sound quality for up to 30 hours off a single charge. And if you're low on power, just fifteen minutes of charging gives you up to seven hours of listening. Premium design, perfect fit They've been crafted for comfortable, extended listening, with luxurious memory foam earpads that encapsulate and cushion the ears, and they're finished in fine style with an elegant fabric-encased headband.