Hi, welcome to the Windowseat: Flight tracker testing family

You wake somewhere over the ocean — cabin dark, seatback screen off, no idea where in the flight you are. Just raise your wrist. Windowseat shows how far you've come, what's left, and when you'll land, computed entirely on your watch with no signal, no wifi, no phone. Set it up at the gate and forget it: through the night, through airplane mode, over the middle of nowhere, the answer to "how much longer?" is one glance away.