At the time they debuted, Sony's WF-1000XM3 earbuds were the pinnacle of the true wireless category. Fast forward nearly two years, and the WF-1000XM4s are looking to regain the crown. They feature improved active noise cancellation, superior sound quality, and IPX4 water and sweat resistance. They're also smaller, with an even more noticeable 40% reduction in the size of the charging case. Speaking of which, it supports both USB-C and wireless charging and provides two full recharges of the earbuds' eight-hour ANC battery for a total of 24 hours of available noise-canceling playback per charge.