Most toy quadcopters are piloted by line of sight, meaning you fly while looking at the drone. FPV or first-person-view flying is instead done by looking at a live video feed from an onboard camera, either on a screen or FPV goggles. It’s a necessary skill if you’re interested in piloting racing or higher-end camera drones and one you’re better off practicing with something like the Blade Glimpse FPV.

At $170 (£135, AU$260) it’s pricier than your average palm-size quad, but those typically don’t have good cameras — this one can record 720p-resolution HD video and 1-megapixel photos to an included 8GB microSD card — or built-in Wi-Fi to connect to a phone or tablet for a live view from the camera.
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https://www.cnet.com/reviews/blade-glimpse-fpv-review/