Camera very simple (no mapping), but perfectly suitable for navigation. I backup appliance uses to guide me during airplane rides. Just one regret: the doc does not specify the correspondence of each function. We must carry out simulations to understand the transmitted information (eg: the cape appears in two different directions, how to interpret each of these values). Last thing: I'm not sure that the autonomy announced (17h) is accurate. I find it a bit optimistic. But a flight rarely lasts more than 4 hours, so with an advance set of batteries, the problem does not arise. PLB