A vertical takeoff and landing. unmanned aerial vehicle is presented that features a quadrotor design for propulsion and attitude stabilization. and an annular wing that provides lift in forward flight. The annular wing enhances human safety by enshrouding the propeller blades. https://www.diegojavierfares.com/flash-offer-A-D-EJ-123-Newton-Compact-Balance-Scale-120-x-0-001-g-hot-grab/