“In a world of delicate, experimental nano-drones, the Black Hornet is the first operational system deployed. A hand-launched observation drone, it can resist gusting winds, fly for 25 minutes, and travel nearly a mile from its operator. The autopilot can follow GPS coordinates to conduct a preplanned patrol or simply hover and stare. All in a drone that weighs less than 0.6 ounces.”
See on www.popsci.com