When they were initially launched, Sony's WF-1000XM3 earbuds set the gold standard in the wireless category. Now, almost two years on, Sony is making a strong bid to reclaim its crown with the WF-1000XM4s. These impressive earbuds boast enhanced active noise cancellation (ANC), exceptional audio quality and IPX4 water and sweat resistance for durability. Additionally, their charging case is 40% smaller than before, allowing for easier portability, and supports both USB-C and wireless charging for ultimate convenience. With a single charge of the eight-hour ANC battery, you'll have up to 24 hours of uninterrupted noise-canceling listening pleasure at your disposal. In short, these sophisticated, feature-packed and capable earbuds are set to revolutionize true wireless sound.