The drone situation might be plausible. There's another product in a different area that says it's 1.63 kg and 120 mm diam x 120 mm height. Takes maybe 10 W t

The drone situation might be plausible. There's another product in a different area that says it's 1.63 kg and 120 mm diam x 120 mm height. Takes maybe 10 W to run. A decent full computer (not a custom chip) weighs ~3.5 kg at 10-15 W use. 4.7" x 4.7" seems reasonable for some drones. Based on https://en.wikipedia.org/wiki/Unmanned_aerial_vehicle https://en.wikipedia.org/wiki/Unmanned_aerial_vehicle the smallest class of drone is: < 20 lb (9.1 kg) It would also fit into the Micro air vehicles (MAV) and larger categories. Micro starts at: >= 250 gm & < 2 Kg. Large is considered 150 kg.