Front spacing speakers that work with phone calls, in addition to media. I had it with my Nexus 6 and Iphone 7. Kind of a nice feature. They are great, but not enough to go backwards and get the huge Nexus 6 or the problematic Nexus 6P. The Iphone 7 was nice and loud, with a great form factor, but I grew tired of IOS. Maybe the Pixel 2 or a next model G6 will have it. When you look at surveys of what people want in a phone, front facing speakers are at the bottom of the list after battery life, display, OS, etc.